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"content": "\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-044b.jpg\" alt=\"\">\u003c/a>\u003cem>A view of Stanford’s campus, taken from Hoover Tower. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>\u003cem>Originally reported for \u003ca href=\"http://www.kqed.org/news/\">KQEDnews.org\u003c/a>.\u003c/em>\u003c/p>\n\u003cp>In 1888, when famed landscape architect Frederick Law Olmsted drafted his master plan for \u003ca href=\"http://www.stanford.edu/\">Stanford University \u003c/a>in Palo Alto, he drew the academic buildings along an east-west axis to efficiently make use of heat and light from the sun.\u003c/p>\n\u003cp>Now, more than 100 years later, a new generation of eco-centric builders and designers are embarking on a $250 million project to raise, retrofit and re-power buildings across the 8,000-acre campus, in the hopes of slashing Stanford’s greenhouse gas emissions to 20 percent below 1990 levels in just 10 years.\u003c/p>\n\u003cp>The plan tackles energy demand in existing and new buildings, while also laying the groundwork for a new energy supply loop that powers, heats and cools the 125 biggest buildings on the main campus. \u003c!--more-->\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>“It’s one of the most far-reaching efforts in the nation for a major research university to make a total transformation of a complete campus energy system”, said Joe Stagner, a civil engineer who directs Stanford’s Department of Sustainability and Energy Management.\u003c/p>\n\u003cp>Despite the steep price tag, the university estimates that by going greener it will save be saving lots of green – $639 million by 2050 through lower utility bills and operating costs.\u003c/p>\n\u003cp>Under the plan, which received preliminary approval by the Stanford Board of Trustees last fall, the energy savings are expected to build up with time. By 2050, the campus is projected to emit only 50 percent of the greenhouse gases it emitted in 1990.\u003c/p>\n\u003cp>“And that’s a minimum, it doesn’t mean that we’re going to stop at 50 percent”, said Fahmida Ahmed, manager of \u003ca href=\"http://sustainable.stanford.edu/index.php\">sustainability programs\u003c/a> at Stanford. She and Stagner wrote the new \u003ca href=\"http://sustainablestanford.stanford.edu/sites/sem.stanford.edu/files/documents/StanfordEnergyandClimatePlan_11-10.pdf\">energy and climate plan\u003c/a> that serves as the university’s sustainability roadmap and presented it to the Trustees in October 2009.\u003c/p>\n\u003cp>Although Stanford has pursued recycling, composting and energy efficiency since the 1980s, until just a few years ago, it lacked a single, cohesive campaign to shrink the university’s carbon footprint – a task made more urgent by Stanford’s steady growth spurts. By 2025, two million square feet of new academic buildings and housing are expected to be built for 2,400 additional faculty, staff and students.\u003c/p>\n\u003cp>“The whole idea to attack greenhouse gases gained momentum in 2006 and 2007,” said Stagner. “University stakeholders, including faculty from the Woods Institute to members of Students for a Sustainable Stanford and faculty and even some alumni, all of them let the university’s leadership know that they wanted Stanford to be more sustainable”, he added.\u003c/p>\n\u003cp>On average, the campus generates 262,000 metric tons – nearly 580 million pounds – of carbon dioxide and other greenhouse gases each year through direct sources such as generating electricity each day at an aging campus power plant, and indirect sources such as airline trips and commuting miles driven by faculty and staff. If no new initiatives are undertaken, pursuing instead a “business-as-usual” level of energy consumption and energy generation, Stanford is expected to produce 325,000 metric tons of greenhouse gases by 2020 and nearly 400,000 metric tons by 2050.\u003c/p>\n\u003cp>Stagner and his team realized early on that energy conservation improvements alone could not achieve substantial greenhouse gas reductions for a campus growing at such a fast clip.\u003c/p>\n\u003cp>“We had to come up with a comprehensive energy model that includes energy demand on one side and energy supply on the other side to inform how to best prioritize our work, to see what had the best return, environmentally, and the best bang for our buck”, said Stagner.\u003c/p>\n\u003cp>The biggest environmental gains, his team discovered, would come from overhauling the campus’ natural gas-fired power plant which has operated for more than 20 years and accounts for nearly 90 percent of the campus’ greenhouse gas emissions.\u003c/p>\n\u003cp>Since Stanford is situated in a Mediterranean climate, many of its buildings need simultaneous cooling and heating. Currently, the cooling system pipes chilled water into buildings to cool them and also remove excess heat that builds up inside them. As the water extracts the unwanted heat from buildings, it warms and is piped back to the central energy facility where massive cooling towers exhaust the excess heat from the water into the atmosphere. The loop continues, with the water being re-chilled at the central energy facility and sent back out to the buildings.\u003c/p>\n\u003cp>Conversely, heat and hot water are supplied to buildings in a separate loop. It uses steam, which is made as a byproduct of burning natural gas to generate electricity to power the buildings. The steam cools into hot water after it has been sent to the buildings, and then it is sent back to the central energy facility, where it is reheated and sent back out.\u003c/p>\n\u003cp>In October 2008, during a year-long audit of the campus’ hour-by-hour energy use, Stagner experienced an ‘a-ha moment.’\u003c/p>\n\u003cp>“I took a look at the data and saw that the potential for reusing the waste heat to heat the campus was much larger than we had hoped for and got very excited about the possibilities,” said Stagner.\u003c/p>\n\u003cp>Stagner realized that nearly half of the campus’ heating needs can be met through bypassing the cooling towers and reusing most of the heat which would otherwise be exhausted into the air. This new scheme of heat recovery is being called “regeneration.” Through it, the campus will also cut its water use by nearly 20 percent since less water would be used by the cooling towers.\u003c/p>\n\u003cp>The project won’t happen overnight, however. It will take five to 10 years, and university crews will have to dig up 10 miles of underground pipes that are currently designed to distribute steam – not hot water — to buildings.\u003c/p>\n\u003cp>When all of that is finished, the campus will be able to burn less natural gas to make electricity and will instead be able to buy electricity from utilities or from direct suppliers using renewables like solar and wind to green up the grid.\u003c/p>\n\u003cp>The electricity will power up to five new multimillion-dollar “heat recovery chillers.” The machines will form the backbone of the new energy loop, where warm water that would have been sent to the cooling towers instead will now be sent for further reheating and piped back out as 170-degree water to provide heat and hot water to buildings.\u003c/p>\n\u003cp>By the end of this year, Stagner will present to Stanford’s trustees an update of the heat recovery system and the broader energy and climate plan, which is receiving one last peer review to see if further greenhouse gas reductions are possible under it. But he and his team are already moving forward.\u003c/p>\n\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-006b.jpg\" alt=\"\">\u003c/a>\u003cem>Stanford’s new heat exchange unit. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://sustainablestanford.stanford.edu/heat_recovery\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/Stanford_steamhot-water-conversion_b.jpg\" alt=\"\">\u003c/a>\u003cem>Campus map showing the buildings where pipes carrying steam will need to be replaced by pipes carrying hot water. Photo and image copyright Stanford University\u003c/em>\u003c/span>\u003c/p>\n\u003cp>On a patch of land behind Memorial Auditorium, for the past six months, workers have been installing a $750,000 heat exchange station next to Stanford’s new business school, the Knight Management Center, which will open later this year. The station is needed to convert the steam currently made by the campus power plant to hot water, which will then be distributed through new pipes snaking underground that will serve 12 new and existing buildings when it fires up next summer.\u003c/p>\n\u003cp>Other universities, including the University of Rochester in New York and Auburn University in Alabama, also have converted from steam to hot water to meet their heating needs, but not to the extent Stanford plans.\u003c/p>\n\u003cp>In addition to the engineering plans, Stanford also is working to change the behavior of its students, professors and staff.\u003c/p>\n\u003cp>“We live in an eco-minded area,” said Ahmed, whose office worked with students to create a \u003ca href=\"http://sustainable.stanford.edu/sites/sustainable.stanford.edu/files/documents/SustainableLiving_at_Stanford_New.pdf\"> guide to sustainable living\u003c/a> that describes how to reduce water and electricity use and act sustainably beyond the dorms and dining halls. “But for conservation to be a part of daily experience there needs to be incentives that we relate to and feel encouraged about.”\u003c/p>\n\u003cp>One Stanford program, for example, establishes an annual baseline of average kilowatt-hours used for an individual school or administrative unit based on past consumption trends. Then, it allows that school or unit to keep whatever money is saved if it falls under its budget for energy spending. In three years, the program yielded a three percent decrease in energy use and $830,000 for the energy-saving participants.\u003c/p>\n\u003cp>Last year, a penalty component was added, so now departments that go over their budgets are supposed to pay back to the university the cost of excess electricity they used. The Office of Sustainability wouldn’t reveal which departments were penalized, pointing out instead that “there are sometimes valid reasons for their energy usage going up” and that the budgets for electricity use “can and will be revised over time as a trend appears.”\u003c/p>\n\u003cp>“If an academic department isn’t responsible for its energy expenditures or budget, it is in the same position as a renter in an apartment who isn’t responsible for paying for the utilities. The renter has no incentive for energy efficiency or water efficiency. It’s just human nature,” said Stanley Young, a spokesman for the California Air Resources Board, in Sacramento.\u003c/p>\n\u003cp>Stanford junior Ishan Nath wrote an \u003ca href=\"http://www.stanforddaily.com/2009/11/09/editorial-extend-energy-incentives-to-student-residences/\">editorial last fall in \u003cem>The Stanford Daily\u003c/em>\u003c/a>, calling for an expansion of the incentive program so students could pocket some of the cost savings from lower energy use in their dorms.\u003c/p>\n\u003cp>“It seems that the double benefit of reducing greenhouse gas emissions while saving money is something we should be taking advantage of in any place we can and I think it’s really important that Stanford is leading in this direction,” he said.\u003c/p>\n\u003cp>Another key part of the Stanford plan to reduce greenhouse emissions is to retrofit existing buildings.\u003c/p>\n\u003cp>There are nearly 200 buildings on campus that are larger than 20,000 square feet, roughly the size of a small supermarket. A 2004 study found that 12 buildings accounted for 33% of the campus’ electricity use.\u003c/p>\n\u003cp>“We put together a new program to look at a single building in detail and go top to bottom and find energy savings opportunities,” said Scott Gould, a senior energy engineer with the Department of Sustainability and Energy Management who oversees the Whole Building Retrofit Program.\u003c/p>\n\u003cp>In 2007, the campus approved $15 million in funding to retrofit these energy-intensive buildings, many of which contain research labs built in the 1960s, ‘70s and ‘80s. Some have annual energy bills of $2 million to $3 million each.\u003c/p>\n\u003cp>Two building retrofits are currently taking place, one at Gilbert Hall, which houses the biology department, and the other at the Beckman Center for Molecular and Genetic Medicine. The fume hoods in them are being fitted with valves that can more efficiently regulate the flow and exhaust of air, so that instead of 10 air exchanges in an hour, there may only be six or eight. New valves also will control the total amount of air supplied to a room.\u003c/p>\n\u003cp>“It’s a technology that wasn’t available in the ‘70s”, said Gould, whose job is compounded by the fact that the retrofit work needs to typically take place over short periods of time to minimize the impact to the still-active labs.\u003c/p>\n\u003cp>It’s easier to design super-energy efficient buildings from the start than going back and retrofitting old ones.\u003c/p>\n\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-026b.jpg\" alt=\"\">\u003c/a>\u003cem>A view of the Y2E2 building. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>The greenest building on Stanford’s campus – and a model for future construction – is the Jerry Yang and Akiko Yamazaki Energy + Environment Building, known as “Y2E2.” Opened in 2008, the four-story, L-shaped building uses 38 percent less energy and 90 percent less total water than older buildings – the latter feat accomplished in part by using recycled water for flushing toilets and rainwater for irrigating landscaping. Four atriums funnel natural light through angled skylights, and they also serve as the building’s lungs, drawing in fresh air and circulating heated air through vents that open and close automatically throughout the day.\u003c/p>\n\u003cp>\u003cspan class=\"right\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-010b.jpg\" alt=\"\">\u003c/a>\u003cem>A skylight inside the Y2E2 building. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>\u003cspan class=\"right\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-007b.jpg\" alt=\"\">\u003c/a>\u003cem>Looking down the atrium inside the Y2E2 building. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>Stanford also has solar power demonstration projects at seven locations on campus but they generate enough power currently to meet only two percent of the campus’ energy needs. Ahmed acknowledged that solar power has the potential to meet 10 percent of the sunny campus’ energy needs, but the university is continuing to track progress on solar power technology before committing to its wider use on campus.\u003c/p>\n\u003cp>So far, students seem pleased with the university’s level of planning and implementation around sustainability.\u003c/p>\n\u003cp>“It’s a period of tremendous uncertainty in what’s going to happen with California’s climate policy,” said Nath. “Without knowing that, it’s impossible to fairly plan for what type of renewable energy to use, and it’s difficult to compare the financing to see what’s the best decision.”\u003c/p>\n\u003cp>John Ten Hoeve is president of the \u003ca href=\"http://inversion.stanford.edu/swep/drupal/\">Stanford Solar and Wind Energy Project\u003c/a>, a group run mostly by graduate students trying to promote renewable energy at Stanford. “I believe I speak for the group when I say that we are very pleased with the new climate and energy plan”, Ten Hoeve said, while complimenting its Office of Sustainability for being “open-minded” to opportunities to cut Stanford’s carbon load.\u003c/p>\n\u003cp>Stanford’s plan focuses on more near-term energy supply and conservation steps to curb campus emissions, but doesn’t fund much renewable energy at the moment. A chart laying out the expected emissions savings as color-coded wedges from building retrofits, heat recovery and other initiatives, has a wedge that corresponds to emissions savings through electricity generated by renewable means, like solar, wind and geothermal power.\u003c/p>\n\u003cp>Ten Hoeve pointed out that the ‘green electricity’ wedge doesn’t kick in fully, however, until 2035. “If Stanford were to produce its own renewable energy, through a few well-sited local wind turbines for example, it would be great PR for the university at little to no cost, which is why we hope it will happen sooner than later”, he said.\u003c/p>\n\u003cp>Some students think that an array of solar panels, such as the one adorning the Y2E2 building, do more than just green the grid.\u003c/p>\n\u003cp>“It’s important to have them in places where people can see them and when they come to Stanford, they’ll say, ‘oh, maybe solar panels are developing enough to be used on a wide scale’”, said Nath.\u003c/p>\n\u003cp>Junior Eli Pollak, a member of \u003ca href=\"http://sustainability.stanford.edu/cgi-bin/index.php\">Students for a Sustainable Stanford\u003c/a>, said he’s impressed by the Stanford plan, but would have liked to have seen more students involved in drafting it.\u003c/p>\n\u003cp>“In keeping with Stanford’s educational mission, it would have been beneficial for the administration to have drawn on the intellect of the students and the students could have gained real-world experience to address climate change and see how a large institution approaches climate change and energy planning,” Pollak said.\u003c/p>\n\u003cp>Stanford isn’t alone in trying to improve energy efficiency and reduce its carbon footprint.\u003c/p>\n\u003cp>The \u003ca href=\"http://www.presidentsclimatecommitment.org/\">American College and University Presidents Climate Commitment\u003c/a> has recruited nearly 700 college and university presidents to cut more than 30 million metric tons of greenhouse gas emissions annually across their campuses.\u003c/p>\n\u003cp>“The niche that we were filling was helping people learn from each other,” said Paul Rowland, executive director of the Association for the Advancement of Sustainability in Higher Education, an organization that has created a tool to help universities and colleges that have signed the climate commitment measure and report their annual greenhouse gas emissions.\u003c/p>\n\u003cp>The first university to have achieved carbon neutrality, Rowland said, is the College of the Atlantic in Bar Harbor, Maine, which it did in part by purchasing renewable energy credits to offset its greenhouse gas emissions.\u003c/p>\n\u003cp>Stanford has declined to join the organization ever since 2006 when it was first asked.\u003c/p>\n\u003cp>“Stanford commits to reductions it can meet. Committing to carbon neutrality without having the solutions at hand must have seemed not very authentic to the administration at the time,” said Ahmed.\u003c/p>\n\u003cp>Stanford’s energy and climate plan also does not endorse the use of carbon offsets or renewable energy credits, citing in part their “regulatory uncertainty,” which suggests the university is more focused on projects campus officials can directly observe, control and monitor to track the progress on its emissions reductions.\u003c/p>\n\u003cp>The chancellors of the 10 campuses that make up the \u003ca href=\"http://www.universityofcalifornia.edu/\">University of California\u003c/a> system have, however, signed onto the ACUPCC. The UC campuses have set a goal of reducing greenhouse gas emissions to 2000 levels by 2014 and to 1990 levels by 2020, while also eliminating all waste sent to landfills by 2020. After these targets have been met, the \u003ca href=\"http://www.universityofcalifornia.edu/sustainability/documents/policy_sustain_prac.pdf\">UC sustainability policy \u003c/a>directs the campuses to pursue carbon neutrality “as soon as possible.”\u003c/p>\n\u003cp>“Over the past five years, the UC system has saved $15 million by replacing aging lighting, heating and ventilation systems and expanding the monitoring and metering of campus buildings,” said Matthew St. Clair, director of the \u003ca href=\"http://www.universityofcalifornia.edu/sustainability/\">UC sustainability efforts\u003c/a>.\u003c/p>\n\u003cp>At UC Berkeley, energy efficiency projects such as changing leaky heating and cooling systems and installing more efficient lighting in its buildings, some of which are more than 100 years old, has cut the campus’ electricity use. At Tang Center, home to the university’s health services, an analysis revealed that the air circulation system was running 24 hours a day. So a new air circulation system was installed, saving the university each year enough electricity to power 46 single family homes.\u003c/p>\n\u003cp>UC campuses are also exploring projects that will generate a total of 10 megawatts of on-site renewable energy by 2014. To date, three of them – Irvine, Merced and San Diego – have one-megawatt solar panel arrays installed at each of their campuses. The solar array at Merced spans nearly nine acres and provides the campus with nearly 20 percent of its annual energy needs.\u003c/p>\n\u003cp>“As a public institution that includes a mission of public service, we need to demonstrate to the taxpayers and voters of California that we are being good citizens in reducing our environmental impact, cutting costs through efficient resource consumption and modeling sustainability leadership”, said St. Clair.\u003c/p>\n\u003cp>Stanford’s Stagner said he similarly feels that colleges and universities don’t need to wait for a blueprint from the government to start tackling climate change, adding that they have a responsibility to “to help create the scientific, human, cultural, and political solutions to it, and to educate tomorrow’s leaders so that they may continue to work on this challenge and advance civilization toward a sustainable future.”\u003c/p>\n\u003cp>[ad floatright]\u003c/p>\n\u003cp>37.427648 -122.166793\u003c/p>\n\n",
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"excerpt": "A new generation of eco-centric builders and designers are embarking on a $250 million project to raise, retrofit and re-power buildings across the 8,000-acre campus, in the hopes of slashing Stanford’s greenhouse gas emissions to 20 percent below 1990 levels in just 10 years.",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-044b.jpg\" alt=\"\">\u003c/a>\u003cem>A view of Stanford’s campus, taken from Hoover Tower. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>\u003cem>Originally reported for \u003ca href=\"http://www.kqed.org/news/\">KQEDnews.org\u003c/a>.\u003c/em>\u003c/p>\n\u003cp>In 1888, when famed landscape architect Frederick Law Olmsted drafted his master plan for \u003ca href=\"http://www.stanford.edu/\">Stanford University \u003c/a>in Palo Alto, he drew the academic buildings along an east-west axis to efficiently make use of heat and light from the sun.\u003c/p>\n\u003cp>Now, more than 100 years later, a new generation of eco-centric builders and designers are embarking on a $250 million project to raise, retrofit and re-power buildings across the 8,000-acre campus, in the hopes of slashing Stanford’s greenhouse gas emissions to 20 percent below 1990 levels in just 10 years.\u003c/p>\n\u003cp>The plan tackles energy demand in existing and new buildings, while also laying the groundwork for a new energy supply loop that powers, heats and cools the 125 biggest buildings on the main campus. \u003c!--more-->\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>“It’s one of the most far-reaching efforts in the nation for a major research university to make a total transformation of a complete campus energy system”, said Joe Stagner, a civil engineer who directs Stanford’s Department of Sustainability and Energy Management.\u003c/p>\n\u003cp>Despite the steep price tag, the university estimates that by going greener it will save be saving lots of green – $639 million by 2050 through lower utility bills and operating costs.\u003c/p>\n\u003cp>Under the plan, which received preliminary approval by the Stanford Board of Trustees last fall, the energy savings are expected to build up with time. By 2050, the campus is projected to emit only 50 percent of the greenhouse gases it emitted in 1990.\u003c/p>\n\u003cp>“And that’s a minimum, it doesn’t mean that we’re going to stop at 50 percent”, said Fahmida Ahmed, manager of \u003ca href=\"http://sustainable.stanford.edu/index.php\">sustainability programs\u003c/a> at Stanford. She and Stagner wrote the new \u003ca href=\"http://sustainablestanford.stanford.edu/sites/sem.stanford.edu/files/documents/StanfordEnergyandClimatePlan_11-10.pdf\">energy and climate plan\u003c/a> that serves as the university’s sustainability roadmap and presented it to the Trustees in October 2009.\u003c/p>\n\u003cp>Although Stanford has pursued recycling, composting and energy efficiency since the 1980s, until just a few years ago, it lacked a single, cohesive campaign to shrink the university’s carbon footprint – a task made more urgent by Stanford’s steady growth spurts. By 2025, two million square feet of new academic buildings and housing are expected to be built for 2,400 additional faculty, staff and students.\u003c/p>\n\u003cp>“The whole idea to attack greenhouse gases gained momentum in 2006 and 2007,” said Stagner. “University stakeholders, including faculty from the Woods Institute to members of Students for a Sustainable Stanford and faculty and even some alumni, all of them let the university’s leadership know that they wanted Stanford to be more sustainable”, he added.\u003c/p>\n\u003cp>On average, the campus generates 262,000 metric tons – nearly 580 million pounds – of carbon dioxide and other greenhouse gases each year through direct sources such as generating electricity each day at an aging campus power plant, and indirect sources such as airline trips and commuting miles driven by faculty and staff. If no new initiatives are undertaken, pursuing instead a “business-as-usual” level of energy consumption and energy generation, Stanford is expected to produce 325,000 metric tons of greenhouse gases by 2020 and nearly 400,000 metric tons by 2050.\u003c/p>\n\u003cp>Stagner and his team realized early on that energy conservation improvements alone could not achieve substantial greenhouse gas reductions for a campus growing at such a fast clip.\u003c/p>\n\u003cp>“We had to come up with a comprehensive energy model that includes energy demand on one side and energy supply on the other side to inform how to best prioritize our work, to see what had the best return, environmentally, and the best bang for our buck”, said Stagner.\u003c/p>\n\u003cp>The biggest environmental gains, his team discovered, would come from overhauling the campus’ natural gas-fired power plant which has operated for more than 20 years and accounts for nearly 90 percent of the campus’ greenhouse gas emissions.\u003c/p>\n\u003cp>Since Stanford is situated in a Mediterranean climate, many of its buildings need simultaneous cooling and heating. Currently, the cooling system pipes chilled water into buildings to cool them and also remove excess heat that builds up inside them. As the water extracts the unwanted heat from buildings, it warms and is piped back to the central energy facility where massive cooling towers exhaust the excess heat from the water into the atmosphere. The loop continues, with the water being re-chilled at the central energy facility and sent back out to the buildings.\u003c/p>\n\u003cp>Conversely, heat and hot water are supplied to buildings in a separate loop. It uses steam, which is made as a byproduct of burning natural gas to generate electricity to power the buildings. The steam cools into hot water after it has been sent to the buildings, and then it is sent back to the central energy facility, where it is reheated and sent back out.\u003c/p>\n\u003cp>In October 2008, during a year-long audit of the campus’ hour-by-hour energy use, Stagner experienced an ‘a-ha moment.’\u003c/p>\n\u003cp>“I took a look at the data and saw that the potential for reusing the waste heat to heat the campus was much larger than we had hoped for and got very excited about the possibilities,” said Stagner.\u003c/p>\n\u003cp>Stagner realized that nearly half of the campus’ heating needs can be met through bypassing the cooling towers and reusing most of the heat which would otherwise be exhausted into the air. This new scheme of heat recovery is being called “regeneration.” Through it, the campus will also cut its water use by nearly 20 percent since less water would be used by the cooling towers.\u003c/p>\n\u003cp>The project won’t happen overnight, however. It will take five to 10 years, and university crews will have to dig up 10 miles of underground pipes that are currently designed to distribute steam – not hot water — to buildings.\u003c/p>\n\u003cp>When all of that is finished, the campus will be able to burn less natural gas to make electricity and will instead be able to buy electricity from utilities or from direct suppliers using renewables like solar and wind to green up the grid.\u003c/p>\n\u003cp>The electricity will power up to five new multimillion-dollar “heat recovery chillers.” The machines will form the backbone of the new energy loop, where warm water that would have been sent to the cooling towers instead will now be sent for further reheating and piped back out as 170-degree water to provide heat and hot water to buildings.\u003c/p>\n\u003cp>By the end of this year, Stagner will present to Stanford’s trustees an update of the heat recovery system and the broader energy and climate plan, which is receiving one last peer review to see if further greenhouse gas reductions are possible under it. But he and his team are already moving forward.\u003c/p>\n\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-006b.jpg\" alt=\"\">\u003c/a>\u003cem>Stanford’s new heat exchange unit. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://sustainablestanford.stanford.edu/heat_recovery\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/Stanford_steamhot-water-conversion_b.jpg\" alt=\"\">\u003c/a>\u003cem>Campus map showing the buildings where pipes carrying steam will need to be replaced by pipes carrying hot water. Photo and image copyright Stanford University\u003c/em>\u003c/span>\u003c/p>\n\u003cp>On a patch of land behind Memorial Auditorium, for the past six months, workers have been installing a $750,000 heat exchange station next to Stanford’s new business school, the Knight Management Center, which will open later this year. The station is needed to convert the steam currently made by the campus power plant to hot water, which will then be distributed through new pipes snaking underground that will serve 12 new and existing buildings when it fires up next summer.\u003c/p>\n\u003cp>Other universities, including the University of Rochester in New York and Auburn University in Alabama, also have converted from steam to hot water to meet their heating needs, but not to the extent Stanford plans.\u003c/p>\n\u003cp>In addition to the engineering plans, Stanford also is working to change the behavior of its students, professors and staff.\u003c/p>\n\u003cp>“We live in an eco-minded area,” said Ahmed, whose office worked with students to create a \u003ca href=\"http://sustainable.stanford.edu/sites/sustainable.stanford.edu/files/documents/SustainableLiving_at_Stanford_New.pdf\"> guide to sustainable living\u003c/a> that describes how to reduce water and electricity use and act sustainably beyond the dorms and dining halls. “But for conservation to be a part of daily experience there needs to be incentives that we relate to and feel encouraged about.”\u003c/p>\n\u003cp>One Stanford program, for example, establishes an annual baseline of average kilowatt-hours used for an individual school or administrative unit based on past consumption trends. Then, it allows that school or unit to keep whatever money is saved if it falls under its budget for energy spending. In three years, the program yielded a three percent decrease in energy use and $830,000 for the energy-saving participants.\u003c/p>\n\u003cp>Last year, a penalty component was added, so now departments that go over their budgets are supposed to pay back to the university the cost of excess electricity they used. The Office of Sustainability wouldn’t reveal which departments were penalized, pointing out instead that “there are sometimes valid reasons for their energy usage going up” and that the budgets for electricity use “can and will be revised over time as a trend appears.”\u003c/p>\n\u003cp>“If an academic department isn’t responsible for its energy expenditures or budget, it is in the same position as a renter in an apartment who isn’t responsible for paying for the utilities. The renter has no incentive for energy efficiency or water efficiency. It’s just human nature,” said Stanley Young, a spokesman for the California Air Resources Board, in Sacramento.\u003c/p>\n\u003cp>Stanford junior Ishan Nath wrote an \u003ca href=\"http://www.stanforddaily.com/2009/11/09/editorial-extend-energy-incentives-to-student-residences/\">editorial last fall in \u003cem>The Stanford Daily\u003c/em>\u003c/a>, calling for an expansion of the incentive program so students could pocket some of the cost savings from lower energy use in their dorms.\u003c/p>\n\u003cp>“It seems that the double benefit of reducing greenhouse gas emissions while saving money is something we should be taking advantage of in any place we can and I think it’s really important that Stanford is leading in this direction,” he said.\u003c/p>\n\u003cp>Another key part of the Stanford plan to reduce greenhouse emissions is to retrofit existing buildings.\u003c/p>\n\u003cp>There are nearly 200 buildings on campus that are larger than 20,000 square feet, roughly the size of a small supermarket. A 2004 study found that 12 buildings accounted for 33% of the campus’ electricity use.\u003c/p>\n\u003cp>“We put together a new program to look at a single building in detail and go top to bottom and find energy savings opportunities,” said Scott Gould, a senior energy engineer with the Department of Sustainability and Energy Management who oversees the Whole Building Retrofit Program.\u003c/p>\n\u003cp>In 2007, the campus approved $15 million in funding to retrofit these energy-intensive buildings, many of which contain research labs built in the 1960s, ‘70s and ‘80s. Some have annual energy bills of $2 million to $3 million each.\u003c/p>\n\u003cp>Two building retrofits are currently taking place, one at Gilbert Hall, which houses the biology department, and the other at the Beckman Center for Molecular and Genetic Medicine. The fume hoods in them are being fitted with valves that can more efficiently regulate the flow and exhaust of air, so that instead of 10 air exchanges in an hour, there may only be six or eight. New valves also will control the total amount of air supplied to a room.\u003c/p>\n\u003cp>“It’s a technology that wasn’t available in the ‘70s”, said Gould, whose job is compounded by the fact that the retrofit work needs to typically take place over short periods of time to minimize the impact to the still-active labs.\u003c/p>\n\u003cp>It’s easier to design super-energy efficient buildings from the start than going back and retrofitting old ones.\u003c/p>\n\u003cp>\u003cspan class=\"left\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-026b.jpg\" alt=\"\">\u003c/a>\u003cem>A view of the Y2E2 building. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>The greenest building on Stanford’s campus – and a model for future construction – is the Jerry Yang and Akiko Yamazaki Energy + Environment Building, known as “Y2E2.” Opened in 2008, the four-story, L-shaped building uses 38 percent less energy and 90 percent less total water than older buildings – the latter feat accomplished in part by using recycled water for flushing toilets and rainwater for irrigating landscaping. Four atriums funnel natural light through angled skylights, and they also serve as the building’s lungs, drawing in fresh air and circulating heated air through vents that open and close automatically throughout the day.\u003c/p>\n\u003cp>\u003cspan class=\"right\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-010b.jpg\" alt=\"\">\u003c/a>\u003cem>A skylight inside the Y2E2 building. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>\u003cspan class=\"right\">\u003ca href=\"http://www.kqed.org/quest\">\u003cimg decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2010/08/GreenU_Stanford_-007b.jpg\" alt=\"\">\u003c/a>\u003cem>Looking down the atrium inside the Y2E2 building. Photo by Sheraz Sadiq\u003c/em>\u003c/span>\u003c/p>\n\u003cp>Stanford also has solar power demonstration projects at seven locations on campus but they generate enough power currently to meet only two percent of the campus’ energy needs. Ahmed acknowledged that solar power has the potential to meet 10 percent of the sunny campus’ energy needs, but the university is continuing to track progress on solar power technology before committing to its wider use on campus.\u003c/p>\n\u003cp>So far, students seem pleased with the university’s level of planning and implementation around sustainability.\u003c/p>\n\u003cp>“It’s a period of tremendous uncertainty in what’s going to happen with California’s climate policy,” said Nath. “Without knowing that, it’s impossible to fairly plan for what type of renewable energy to use, and it’s difficult to compare the financing to see what’s the best decision.”\u003c/p>\n\u003cp>John Ten Hoeve is president of the \u003ca href=\"http://inversion.stanford.edu/swep/drupal/\">Stanford Solar and Wind Energy Project\u003c/a>, a group run mostly by graduate students trying to promote renewable energy at Stanford. “I believe I speak for the group when I say that we are very pleased with the new climate and energy plan”, Ten Hoeve said, while complimenting its Office of Sustainability for being “open-minded” to opportunities to cut Stanford’s carbon load.\u003c/p>\n\u003cp>Stanford’s plan focuses on more near-term energy supply and conservation steps to curb campus emissions, but doesn’t fund much renewable energy at the moment. A chart laying out the expected emissions savings as color-coded wedges from building retrofits, heat recovery and other initiatives, has a wedge that corresponds to emissions savings through electricity generated by renewable means, like solar, wind and geothermal power.\u003c/p>\n\u003cp>Ten Hoeve pointed out that the ‘green electricity’ wedge doesn’t kick in fully, however, until 2035. “If Stanford were to produce its own renewable energy, through a few well-sited local wind turbines for example, it would be great PR for the university at little to no cost, which is why we hope it will happen sooner than later”, he said.\u003c/p>\n\u003cp>Some students think that an array of solar panels, such as the one adorning the Y2E2 building, do more than just green the grid.\u003c/p>\n\u003cp>“It’s important to have them in places where people can see them and when they come to Stanford, they’ll say, ‘oh, maybe solar panels are developing enough to be used on a wide scale’”, said Nath.\u003c/p>\n\u003cp>Junior Eli Pollak, a member of \u003ca href=\"http://sustainability.stanford.edu/cgi-bin/index.php\">Students for a Sustainable Stanford\u003c/a>, said he’s impressed by the Stanford plan, but would have liked to have seen more students involved in drafting it.\u003c/p>\n\u003cp>“In keeping with Stanford’s educational mission, it would have been beneficial for the administration to have drawn on the intellect of the students and the students could have gained real-world experience to address climate change and see how a large institution approaches climate change and energy planning,” Pollak said.\u003c/p>\n\u003cp>Stanford isn’t alone in trying to improve energy efficiency and reduce its carbon footprint.\u003c/p>\n\u003cp>The \u003ca href=\"http://www.presidentsclimatecommitment.org/\">American College and University Presidents Climate Commitment\u003c/a> has recruited nearly 700 college and university presidents to cut more than 30 million metric tons of greenhouse gas emissions annually across their campuses.\u003c/p>\n\u003cp>“The niche that we were filling was helping people learn from each other,” said Paul Rowland, executive director of the Association for the Advancement of Sustainability in Higher Education, an organization that has created a tool to help universities and colleges that have signed the climate commitment measure and report their annual greenhouse gas emissions.\u003c/p>\n\u003cp>The first university to have achieved carbon neutrality, Rowland said, is the College of the Atlantic in Bar Harbor, Maine, which it did in part by purchasing renewable energy credits to offset its greenhouse gas emissions.\u003c/p>\n\u003cp>Stanford has declined to join the organization ever since 2006 when it was first asked.\u003c/p>\n\u003cp>“Stanford commits to reductions it can meet. Committing to carbon neutrality without having the solutions at hand must have seemed not very authentic to the administration at the time,” said Ahmed.\u003c/p>\n\u003cp>Stanford’s energy and climate plan also does not endorse the use of carbon offsets or renewable energy credits, citing in part their “regulatory uncertainty,” which suggests the university is more focused on projects campus officials can directly observe, control and monitor to track the progress on its emissions reductions.\u003c/p>\n\u003cp>The chancellors of the 10 campuses that make up the \u003ca href=\"http://www.universityofcalifornia.edu/\">University of California\u003c/a> system have, however, signed onto the ACUPCC. The UC campuses have set a goal of reducing greenhouse gas emissions to 2000 levels by 2014 and to 1990 levels by 2020, while also eliminating all waste sent to landfills by 2020. After these targets have been met, the \u003ca href=\"http://www.universityofcalifornia.edu/sustainability/documents/policy_sustain_prac.pdf\">UC sustainability policy \u003c/a>directs the campuses to pursue carbon neutrality “as soon as possible.”\u003c/p>\n\u003cp>“Over the past five years, the UC system has saved $15 million by replacing aging lighting, heating and ventilation systems and expanding the monitoring and metering of campus buildings,” said Matthew St. Clair, director of the \u003ca href=\"http://www.universityofcalifornia.edu/sustainability/\">UC sustainability efforts\u003c/a>.\u003c/p>\n\u003cp>At UC Berkeley, energy efficiency projects such as changing leaky heating and cooling systems and installing more efficient lighting in its buildings, some of which are more than 100 years old, has cut the campus’ electricity use. At Tang Center, home to the university’s health services, an analysis revealed that the air circulation system was running 24 hours a day. So a new air circulation system was installed, saving the university each year enough electricity to power 46 single family homes.\u003c/p>\n\u003cp>UC campuses are also exploring projects that will generate a total of 10 megawatts of on-site renewable energy by 2014. To date, three of them – Irvine, Merced and San Diego – have one-megawatt solar panel arrays installed at each of their campuses. The solar array at Merced spans nearly nine acres and provides the campus with nearly 20 percent of its annual energy needs.\u003c/p>\n\u003cp>“As a public institution that includes a mission of public service, we need to demonstrate to the taxpayers and voters of California that we are being good citizens in reducing our environmental impact, cutting costs through efficient resource consumption and modeling sustainability leadership”, said St. Clair.\u003c/p>\n\u003cp>Stanford’s Stagner said he similarly feels that colleges and universities don’t need to wait for a blueprint from the government to start tackling climate change, adding that they have a responsibility to “to help create the scientific, human, cultural, and political solutions to it, and to educate tomorrow’s leaders so that they may continue to work on this challenge and advance civilization toward a sustainable future.”\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"disqusTitle": "Giant Sequoias Struggle with Drought",
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"content": "\u003cp>In the summer of 2014, biologist Nathan Stephenson was surveying giant sequoias in a clearing in Sequoia National Park. He looked up at the crown of a mature giant sequoia, hundreds of years old, and noticed that half of its leaves had turned brown.\u003c/p>\n\u003cp>In 35 years studying giant sequoias in the Sierra Nevada, Stephenson had never seen a mature giant sequoia with that many brown leaves. He looked in the park’s records, which go back 120 years.\u003c/p>\n\u003cp>“No one had ever reported that before,” he said.\u003c/p>\n\u003cfigure id=\"attachment_97693\" class=\"wp-caption aligncenter\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Dead_giant_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97693\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Dead_giant_sequoia-800x450.jpg\" alt=\"Half a dozen giant sequoias, like the one in the background, have died in Sequoia and Kings Canyon National Parks since the drought started in California four years ago. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Half a dozen giant sequoias, like this one in the background, have died in Sequoia and Kings Canyon National Parks since the drought started in California four years ago. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Last year, he and his team surveyed 4,300 of the approximately 160,000 giant sequoias in Sequoia and Kings Canyon National Parks. They found that one percent of them had shed half or more of their leaves.\u003c/p>\n\u003cp>“Trees lose foliage as a way to cope with drought,” said Stephenson, who works for the U.S. Geological Survey.\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>Only half a dozen giant sequoias have died in the Sierra Nevada’s Sequoia and Kings Canyon National Parks since the drought began, said the parks’ science coordinator Koren Nydick. But the fact that some giant sequoias started to show signs of stress last year caused concern among scientists because the trees are normally long-lived, with some known to be more than 3,000 years old. And all around them in the Sierra, some 6 million trees of other species have died, according to a U.S. Forest Service survey in July.\u003c/p>\n\u003cp>“We’re seeing firs, pines, incense cedars and oaks are all dying at a rate we’ve never seen before,” said Stephenson. “Even during the 1977 drought in California we didn’t see this many trees dying.”\u003c/p>\n\u003cfigure id=\"attachment_97695\" class=\"wp-caption alignleft\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Nathan_Stephenson.jpg\">\u003cimg class=\"size-medium wp-image-97695\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Nathan_Stephenson-800x450.jpg\" alt=\"In the summer of 2014, U.S. Geological Survey biologist Nathan Stephenson became concerned when he looked up at the crown of a mature giant sequoia, hundreds of years old, and noticed that half of its leaves had turned brown. “No one had ever reported that before,” he said. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">In the summer of 2014, U.S. Geological Survey biologist Nathan Stephenson became concerned when he looked up at the crown of a mature giant sequoia, hundreds of years old, and noticed that half of its leaves had turned brown. “No one had ever reported that before,” he said. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>The severity of the damage on some of the sequoias led him and other biologists to investigate further.\u003c/p>\n\u003cp>This summer, scientists from the University of California, Berkeley, Stanford University, the USGS and the Carnegie Institution for Science counted the number of giant sequoias with brown leaves, climbed 50 of the trees to see if they were having trouble transporting water to their treetops and flew over giant sequoia groves to make images of their water content using special equipment.\u003c/p>\n\u003cp>The researchers’ conclusion: some giant sequoias in Sequoia National Park are showing signs of stress, but it’s unclear which trees might be at the highest risk of dying.\u003c/p>\n\u003cp>Giant sequoias require more water than any other tree, said tree biologist Anthony Ambrose, of the University of California, Berkeley. On a hot summer day, they can suck up 500 to 800 gallons. That’s twice as much water as a California household uses in a day. And it’s not just any water.\u003c/p>\n\u003cp>“That water comes primarily from snow that slowly melts during the spring and recharges the groundwater,” said Ambrose, “so that during the summer months they have sufficient water to sustain their growth and physiology.”\u003c/p>\n\u003cp>The problem is that during California’s historic drought, little snow has been available to the trees.\u003c/p>\n\u003cp>“The last two winters here have been by far the warmest on record,” said Stephenson, “and what that’s meant is there’s been almost no snow on the ground.”\u003c/p>\n\u003cp>In August and September, Ambrose and Wendy Baxter, another UC biologist, climbed 50 giant sequoias in Sequoia National Park’s Giant Forest. They collected leaves from their treetops –sometimes the equivalent of 30 stories up-- using a simple rig that allows them to hoist themselves up on a rope while hardly touching the bark.\u003c/p>\n\u003cfigure id=\"attachment_97698\" class=\"wp-caption aligncenter\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97698\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-800x450.jpg\" alt=\"Biologist Wendy Baxter, of the University of California, Berkeley, climbed a giant sequoia in September. She used a simple rig that allowed her to hoist herself up on a rope while hardly touching the bark. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Biologist Wendy Baxter, of the University of California, Berkeley, climbed a giant sequoia in September. She used a simple rig that allowed her to hoist herself up on a rope while hardly touching the bark. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>“There’s a beautiful view up here,” said Baxter, as she looked out over the top of the forest from her vantage point 300 feet up. She used small shears to cut a clump of leaves from the treetop and stuffed them in plastic bags.\u003c/p>\n\u003cp>Even at great heights, giant sequoias are able to draw water up to leaves at their treetops. Inside each of the trees’ cells, water gets pulled up to the top of the tree as if it were being sucked up through a straw.\u003c/p>\n\u003cp>“When we clip it, the water retracts back into the stem, kind of like a rubber band,” said Baxter.\u003c/p>\n\u003cfigure id=\"attachment_97697\" class=\"wp-caption alignleft\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02.jpg\">\u003cimg class=\"size-medium wp-image-97697\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-800x450.jpg\" alt=\"Biologist Wendy Baxter and a colleague from the University of California, Berkeley, climbed 50 giant sequoias in Sequoia National Park in August and September to get a sense of whether the trees were having trouble transporting water to their treetops.\" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Biologist Wendy Baxter and a colleague from the University of California, Berkeley, climbed 50 giant sequoias in Sequoia National Park in August and September to get a sense of whether the trees were having trouble transporting water to their treetops. \u003ccite>(Lincoln Else/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Back on the ground, she handed the bags to UC Berkeley technician Ken Schwab, who placed a group of leaves inside a round metal device called a pressure chamber.\u003c/p>\n\u003cp>“When we put our stem into the pressure chamber,” said Baxter, “the amount of pressure that it takes to force the water back out is an indication of how much tension it was under.”\u003c/p>\n\u003cp>The higher the pressure required to push the water out, the more stressed the tree is.\u003c/p>\n\u003cp>“Some of the trees are definitely as stressed as we’ve ever measured giant sequoia,” said Ambrose.\u003c/p>\n\u003cp>This summer, Ambrose and Baxter took measurements in two sites in the forest where some of the giant sequoias had lost half of their leaves in 2014 and in two sites where trees had looked healthier. They found that the most water-stressed trees and the least stressed ones could be found in all sites. Perhaps, Ambrose said, some trees within a particular site have more access to groundwater, their roots reaching deep underground into cracks and crevices that other trees can’t get to.\u003c/p>\n\u003cfigure id=\"attachment_97691\" class=\"wp-caption alignright\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97691\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-800x450.jpg\" alt=\"University of California, Berkeley, biologist Anthony Ambrose cuts leaves from the top of a giant sequoia in Sequoia National Park at daybreak on Sept. 2.\" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">University of California, Berkeley, biologist Anthony Ambrose cuts leaves from the top of a giant sequoia in Sequoia National Park at daybreak on Sept. 2. \u003ccite>(Lincoln Else/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>In comparison with the summer of 2014, fewer giant sequoias lost half of their leaves this summer, said Stephenson. He thinks that perhaps the trees “did all the hard work of adjusting to the drought last year.”\u003c/p>\n\u003cp>Figuring out what trees will succumb to drought is a difficult business, said Greg Asner, of Stanford University and the Carnegie Institution for Science. Sometimes, Asner said, trees lose lots of leaves and later rebound when they have access to water. Other times, trees look healthy, but are in fact water-stressed.\u003c/p>\n\u003cp>Asner designed the Carnegie Airborne Observatory, a plane with instruments that measure water, nitrogen and sugars in trees using a technology called laser-guided spectral imaging. This summer he flew over and made images of the giant sequoias in Sequoia National Park’s Giant Forest. On the resulting map, the sequoias on the west side of Giant Forest appear orange and red, a sign that they’re doing worst in terms of their water content. The trees on the east side of the forest appear in blue, a sign that they have more water.\u003c/p>\n\u003cfigure id=\"attachment_97706\" class=\"wp-caption alignright\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Asner_Screenshot5.jpg\">\u003cimg class=\"size-medium wp-image-97706\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Asner_Screenshot5-800x450.jpg\" alt=\"Greg Asner, of the Carnegie Institution for Science, created this map of giant sequoias in Sequoia National Park’s Giant Forest this summer, after imaging the trees with the Carnegie Airborne Observatory, a plane with instruments that measure water, nitrogen and sugars. The trees that appear in blue are getting the most water. The yellow, orange and red trees are getting the least. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Greg Asner, of the Carnegie Institution for Science, created this map of giant sequoias in Sequoia National Park’s Giant Forest this summer, after imaging the trees with the Carnegie Airborne Observatory, a plane with instruments that measure water, nitrogen and sugars. The trees that appear in blue are getting the most water. The yellow, orange and red trees are getting the least. \u003ccite>(Greg Asner/Carnegie Institution for Science)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>But only repeated flights can accurately pinpoint the most vulnerable giant sequoias, said Asner.\u003c/p>\n\u003cp>“We cannot tell if a tree is improving or declining in a single mapping,” he said. “By re-flying we can see the total amount of water change in each canopy, and that will be the best possible measure of how each tree is doing.”\u003c/p>\n\u003cp>So far, scientists say, they can’t draw conclusions about just how stressed the iconic giant sequoia trees are after four years of severe drought, or how many might be at risk of dying.\u003c/p>\n\u003cp>Scientists say the research, however, is important in establishing a baseline that will allow them to monitor giant sequoias for years to come.\u003c/p>\n\u003cp>“Our main concern isn’t necessarily the current drought right now; it’s looking to the future,” said Stephenson. “If the climate continues to warm, it will put more stress on the giant sequoias.”\u003c/p>\n\u003cfigure id=\"attachment_97694\" class=\"wp-caption aligncenter\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/General_Sherman_giant_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97694\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-800x450.jpg\" alt=\"The General Sherman, in the middle, is billed as the largest tree in the world. If conditions for giant sequoias worsened in the future, Sequoia National Park officials might consider irrigating the General Sherman and other famous giant sequoias. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">The General Sherman, in the middle, is billed as the largest tree in the world. If conditions for giant sequoias worsened in the future, Sequoia National Park officials might consider irrigating the General Sherman and other famous giant sequoias. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>If the drought continues, or if the trees show significant decline as the climate continues to warm, giant sequoias might need some human intervention in the future to survive climate change. That could take the form of prescribed burns to reduce competition for water from surrounding trees. Parks officials could even decide to irrigate some of their most famous giant sequoias, such as the General Sherman, billed as the world’s largest tree, said Nydick.\u003c/p>\n\u003cp>[ad floatright]\u003c/p>\n\u003cp>“If temperatures continue to increase, as they’re almost certain to,” said Ambrose, “at what point will they reach a threshold where they can’t recover?”\u003c/p>\n\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>In the summer of 2014, biologist Nathan Stephenson was surveying giant sequoias in a clearing in Sequoia National Park. He looked up at the crown of a mature giant sequoia, hundreds of years old, and noticed that half of its leaves had turned brown.\u003c/p>\n\u003cp>In 35 years studying giant sequoias in the Sierra Nevada, Stephenson had never seen a mature giant sequoia with that many brown leaves. He looked in the park’s records, which go back 120 years.\u003c/p>\n\u003cp>“No one had ever reported that before,” he said.\u003c/p>\n\u003cfigure id=\"attachment_97693\" class=\"wp-caption aligncenter\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Dead_giant_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97693\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Dead_giant_sequoia-800x450.jpg\" alt=\"Half a dozen giant sequoias, like the one in the background, have died in Sequoia and Kings Canyon National Parks since the drought started in California four years ago. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Dead_giant_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Half a dozen giant sequoias, like this one in the background, have died in Sequoia and Kings Canyon National Parks since the drought started in California four years ago. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Last year, he and his team surveyed 4,300 of the approximately 160,000 giant sequoias in Sequoia and Kings Canyon National Parks. They found that one percent of them had shed half or more of their leaves.\u003c/p>\n\u003cp>“Trees lose foliage as a way to cope with drought,” said Stephenson, who works for the U.S. Geological Survey.\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>Only half a dozen giant sequoias have died in the Sierra Nevada’s Sequoia and Kings Canyon National Parks since the drought began, said the parks’ science coordinator Koren Nydick. But the fact that some giant sequoias started to show signs of stress last year caused concern among scientists because the trees are normally long-lived, with some known to be more than 3,000 years old. And all around them in the Sierra, some 6 million trees of other species have died, according to a U.S. Forest Service survey in July.\u003c/p>\n\u003cp>“We’re seeing firs, pines, incense cedars and oaks are all dying at a rate we’ve never seen before,” said Stephenson. “Even during the 1977 drought in California we didn’t see this many trees dying.”\u003c/p>\n\u003cfigure id=\"attachment_97695\" class=\"wp-caption alignleft\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Nathan_Stephenson.jpg\">\u003cimg class=\"size-medium wp-image-97695\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Nathan_Stephenson-800x450.jpg\" alt=\"In the summer of 2014, U.S. Geological Survey biologist Nathan Stephenson became concerned when he looked up at the crown of a mature giant sequoia, hundreds of years old, and noticed that half of its leaves had turned brown. “No one had ever reported that before,” he said. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Nathan_Stephenson-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">In the summer of 2014, U.S. Geological Survey biologist Nathan Stephenson became concerned when he looked up at the crown of a mature giant sequoia, hundreds of years old, and noticed that half of its leaves had turned brown. “No one had ever reported that before,” he said. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>The severity of the damage on some of the sequoias led him and other biologists to investigate further.\u003c/p>\n\u003cp>This summer, scientists from the University of California, Berkeley, Stanford University, the USGS and the Carnegie Institution for Science counted the number of giant sequoias with brown leaves, climbed 50 of the trees to see if they were having trouble transporting water to their treetops and flew over giant sequoia groves to make images of their water content using special equipment.\u003c/p>\n\u003cp>The researchers’ conclusion: some giant sequoias in Sequoia National Park are showing signs of stress, but it’s unclear which trees might be at the highest risk of dying.\u003c/p>\n\u003cp>Giant sequoias require more water than any other tree, said tree biologist Anthony Ambrose, of the University of California, Berkeley. On a hot summer day, they can suck up 500 to 800 gallons. That’s twice as much water as a California household uses in a day. And it’s not just any water.\u003c/p>\n\u003cp>“That water comes primarily from snow that slowly melts during the spring and recharges the groundwater,” said Ambrose, “so that during the summer months they have sufficient water to sustain their growth and physiology.”\u003c/p>\n\u003cp>The problem is that during California’s historic drought, little snow has been available to the trees.\u003c/p>\n\u003cp>“The last two winters here have been by far the warmest on record,” said Stephenson, “and what that’s meant is there’s been almost no snow on the ground.”\u003c/p>\n\u003cp>In August and September, Ambrose and Wendy Baxter, another UC biologist, climbed 50 giant sequoias in Sequoia National Park’s Giant Forest. They collected leaves from their treetops –sometimes the equivalent of 30 stories up-- using a simple rig that allows them to hoist themselves up on a rope while hardly touching the bark.\u003c/p>\n\u003cfigure id=\"attachment_97698\" class=\"wp-caption aligncenter\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97698\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-800x450.jpg\" alt=\"Biologist Wendy Baxter, of the University of California, Berkeley, climbed a giant sequoia in September. She used a simple rig that allowed her to hoist herself up on a rope while hardly touching the bark. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_climbs_giant_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Biologist Wendy Baxter, of the University of California, Berkeley, climbed a giant sequoia in September. She used a simple rig that allowed her to hoist herself up on a rope while hardly touching the bark. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>“There’s a beautiful view up here,” said Baxter, as she looked out over the top of the forest from her vantage point 300 feet up. She used small shears to cut a clump of leaves from the treetop and stuffed them in plastic bags.\u003c/p>\n\u003cp>Even at great heights, giant sequoias are able to draw water up to leaves at their treetops. Inside each of the trees’ cells, water gets pulled up to the top of the tree as if it were being sucked up through a straw.\u003c/p>\n\u003cp>“When we clip it, the water retracts back into the stem, kind of like a rubber band,” said Baxter.\u003c/p>\n\u003cfigure id=\"attachment_97697\" class=\"wp-caption alignleft\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02.jpg\">\u003cimg class=\"size-medium wp-image-97697\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-800x450.jpg\" alt=\"Biologist Wendy Baxter and a colleague from the University of California, Berkeley, climbed 50 giant sequoias in Sequoia National Park in August and September to get a sense of whether the trees were having trouble transporting water to their treetops.\" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Wendy_Baxter_atop_sequoia_02-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Biologist Wendy Baxter and a colleague from the University of California, Berkeley, climbed 50 giant sequoias in Sequoia National Park in August and September to get a sense of whether the trees were having trouble transporting water to their treetops. \u003ccite>(Lincoln Else/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Back on the ground, she handed the bags to UC Berkeley technician Ken Schwab, who placed a group of leaves inside a round metal device called a pressure chamber.\u003c/p>\n\u003cp>“When we put our stem into the pressure chamber,” said Baxter, “the amount of pressure that it takes to force the water back out is an indication of how much tension it was under.”\u003c/p>\n\u003cp>The higher the pressure required to push the water out, the more stressed the tree is.\u003c/p>\n\u003cp>“Some of the trees are definitely as stressed as we’ve ever measured giant sequoia,” said Ambrose.\u003c/p>\n\u003cp>This summer, Ambrose and Baxter took measurements in two sites in the forest where some of the giant sequoias had lost half of their leaves in 2014 and in two sites where trees had looked healthier. They found that the most water-stressed trees and the least stressed ones could be found in all sites. Perhaps, Ambrose said, some trees within a particular site have more access to groundwater, their roots reaching deep underground into cracks and crevices that other trees can’t get to.\u003c/p>\n\u003cfigure id=\"attachment_97691\" class=\"wp-caption alignright\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97691\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-800x450.jpg\" alt=\"University of California, Berkeley, biologist Anthony Ambrose cuts leaves from the top of a giant sequoia in Sequoia National Park at daybreak on Sept. 2.\" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Anthony_Ambrose_atop_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">University of California, Berkeley, biologist Anthony Ambrose cuts leaves from the top of a giant sequoia in Sequoia National Park at daybreak on Sept. 2. \u003ccite>(Lincoln Else/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>In comparison with the summer of 2014, fewer giant sequoias lost half of their leaves this summer, said Stephenson. He thinks that perhaps the trees “did all the hard work of adjusting to the drought last year.”\u003c/p>\n\u003cp>Figuring out what trees will succumb to drought is a difficult business, said Greg Asner, of Stanford University and the Carnegie Institution for Science. Sometimes, Asner said, trees lose lots of leaves and later rebound when they have access to water. Other times, trees look healthy, but are in fact water-stressed.\u003c/p>\n\u003cp>Asner designed the Carnegie Airborne Observatory, a plane with instruments that measure water, nitrogen and sugars in trees using a technology called laser-guided spectral imaging. This summer he flew over and made images of the giant sequoias in Sequoia National Park’s Giant Forest. On the resulting map, the sequoias on the west side of Giant Forest appear orange and red, a sign that they’re doing worst in terms of their water content. The trees on the east side of the forest appear in blue, a sign that they have more water.\u003c/p>\n\u003cfigure id=\"attachment_97706\" class=\"wp-caption alignright\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Asner_Screenshot5.jpg\">\u003cimg class=\"size-medium wp-image-97706\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/Asner_Screenshot5-800x450.jpg\" alt=\"Greg Asner, of the Carnegie Institution for Science, created this map of giant sequoias in Sequoia National Park’s Giant Forest this summer, after imaging the trees with the Carnegie Airborne Observatory, a plane with instruments that measure water, nitrogen and sugars. The trees that appear in blue are getting the most water. The yellow, orange and red trees are getting the least. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/Asner_Screenshot5-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Greg Asner, of the Carnegie Institution for Science, created this map of giant sequoias in Sequoia National Park’s Giant Forest this summer, after imaging the trees with the Carnegie Airborne Observatory, a plane with instruments that measure water, nitrogen and sugars. The trees that appear in blue are getting the most water. The yellow, orange and red trees are getting the least. \u003ccite>(Greg Asner/Carnegie Institution for Science)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>But only repeated flights can accurately pinpoint the most vulnerable giant sequoias, said Asner.\u003c/p>\n\u003cp>“We cannot tell if a tree is improving or declining in a single mapping,” he said. “By re-flying we can see the total amount of water change in each canopy, and that will be the best possible measure of how each tree is doing.”\u003c/p>\n\u003cp>So far, scientists say, they can’t draw conclusions about just how stressed the iconic giant sequoia trees are after four years of severe drought, or how many might be at risk of dying.\u003c/p>\n\u003cp>Scientists say the research, however, is important in establishing a baseline that will allow them to monitor giant sequoias for years to come.\u003c/p>\n\u003cp>“Our main concern isn’t necessarily the current drought right now; it’s looking to the future,” said Stephenson. “If the climate continues to warm, it will put more stress on the giant sequoias.”\u003c/p>\n\u003cfigure id=\"attachment_97694\" class=\"wp-caption aligncenter\" style=\"max-width: 800px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/General_Sherman_giant_sequoia.jpg\">\u003cimg class=\"size-medium wp-image-97694\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-800x450.jpg\" alt=\"The General Sherman, in the middle, is billed as the largest tree in the world. If conditions for giant sequoias worsened in the future, Sequoia National Park officials might consider irrigating the General Sherman and other famous giant sequoias. \" width=\"800\" height=\"450\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-800x450.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-1440x810.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-1180x664.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/General_Sherman_giant_sequoia-960x540.jpg 960w\" sizes=\"(max-width: 800px) 100vw, 800px\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">The General Sherman, in the middle, is billed as the largest tree in the world. If conditions for giant sequoias worsened in the future, Sequoia National Park officials might consider irrigating the General Sherman and other famous giant sequoias. \u003ccite>(Gabriela Quirós/KQED)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>If the drought continues, or if the trees show significant decline as the climate continues to warm, giant sequoias might need some human intervention in the future to survive climate change. That could take the form of prescribed burns to reduce competition for water from surrounding trees. Parks officials could even decide to irrigate some of their most famous giant sequoias, such as the General Sherman, billed as the world’s largest tree, said Nydick.\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"disqusTitle": "The Secret Life of a Raindrop",
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"content": "\u003cp>[contextly_auto_sidebar id=\"ngqJALTleeosh2JhvSQygf3ACavDlNee\"]\u003c/p>\n\u003cp>According to a widely held belief, you can’t squeeze water from a rock. But researchers from UC Berkeley who are trying to better understand where water is stored in nature are challenging that old adage.\u003c/p>\n\u003cp>After nearly ten years of studying a steep, 20-square-mile area near the \u003ca href=\"https://en.wikipedia.org/wiki/South_Fork_Eel_River\" target=\"_blank\">South Fork Eel River\u003c/a> in coastal Mendocino County, the scientists have shown that for trees and other plants, deep and highly fractured rock formations beneath the Earth’s surface are a much larger water reservoir than was previously known.\u003c/p>\n\u003cfigure id=\"attachment_94852\" class=\"wp-caption aligncenter\" style=\"max-width: 900px\">\u003cimg class=\"size-full wp-image-94852\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto.jpg\" alt=\"LiDAR image illustrating a deep seated landslide underneath vegetative cover at the South Fork Eel River confluence with Tenmile Creek.\" width=\"900\" height=\"678\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto.jpg 900w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto-400x301.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto-800x603.jpg 800w\" sizes=\"(max-width: 900px) 100vw, 900px\">\u003cfigcaption class=\"wp-caption-text\">LiDAR image illustrating a deep seated landslide underneath vegetative cover at the South Fork Eel River confluence with Tenmile Creek. \u003ccite>(Credit: Collin Bode, 2010)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>The work to understand the role that “rock water” plays in the hydrologic cycle began in 2006 when researchers from UC Berkeley embarked on a multi-year study sponsored by the \u003ca href=\"http://www.wmkeck.org/\" target=\"_blank\">Keck Foundation \u003c/a>called the Hydrowatch project. It was designed to precisely monitor and measure the pathways of water in Mendocino County’s \u003ca href=\"http://angelo.berkeley.edu/\" target=\"_blank\">Angelo Coast Range Reserve \u003c/a>as it cycles from the groundwater table to the tops of trees and into the atmosphere.\u003c/p>\n\u003cp>“We were really interested in learning the fate of precipitation in the land surface,” explains \u003ca href=\"http://nature.berkeley.edu/dawsonlab/people/todd-dawson/\" target=\"_blank\">Todd Dawson\u003c/a>, professor of \u003ca href=\"https://ib.berkeley.edu/\" target=\"_blank\">Integrative Biology at UC Berkeley\u003c/a>. “So really trying to figure out when precipitation arrives at the site, where does it get into the rock, where does it get into the stream, how does is recharge the ground water, how much of it is used by the vegetation, and ultimately, how much of it ends up in the streams and going back out to the Pacific Ocean.”\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>Learning more about where water consumed by forests, or flowing through streams actually comes from is important, the scientists say, in better understanding the impact of climate change.\u003c/p>\n\u003cp>In 2013, the project expanded to become part of a landmark study sponsored by the National Science Foundation called the \u003ca href=\"http://criticalzone.org/national/\" target=\"_blank\">Critical Zone Observatories Program\u003c/a>. Today, the site is called the \u003ca href=\"http://criticalzone.org/eel/\" target=\"_blank\">Eel River CZO\u003c/a> and it’s part of a national network of ten similar watershed observation sites across the United States - each with unique climate, geology and vegetation.\u003c/p>\n\u003cfigure id=\"attachment_94854\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94854\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/CZONationalMap-1440x812.jpg\" alt=\"The ten environmental observatories within the CZO Network study the Earth's outer skin - where water, atmosphere, soil, ecosystems interact.\" width=\"640\" height=\"361\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-1440x812.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-800x451.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-1180x665.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-960x541.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">The ten environmental observatories within the CZO Network study the Earth's outer skin - where water, atmosphere, soil, ecosystems interact. \u003ccite>(Credit: National Critical Zone Observatories)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>The term “critical zone” is relatively new and is being used by scientists to define the zone that is tectonically, geologically and biologically active across the Earth’s surface. It represents a groundbreaking new approach to studying the \u003ca href=\"https://en.wikipedia.org/wiki/Water_cycle\" target=\"_blank\">hydrologic cycle\u003c/a>.\u003c/p>\n\u003cp>“The critical zone really tries to capture this idea of the zone between bedrock beneath our feet, and the top of the vegetation where the trees are interacting with the atmosphere,” explains Dawson. “So it’s everything in between. It’s rock, it’s soil, it’s the vegetation, and it’s the atmosphere that’s coupled to that vegetation. That’s the critical zone. It’s where life meets rock.”\u003c/p>\n\u003cfigure id=\"attachment_94858\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94858\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-1440x1667.jpg\" alt=\"The critical zone is defined as the zone that is tectonically, geologically and biologically active across the Earth’s surface.\" width=\"640\" height=\"741\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-1440x1667.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-400x463.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-800x926.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-1180x1366.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-960x1112.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">The critical zone is defined as the zone that is tectonically, geologically and biologically active across the Earth’s surface. \u003ccite>(Credit: Chorover et al., Catalina Jemez CZO)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Scientists across a broad range of earth, life and computer sciences – from microbiologists to geologists to electrical engineers - are now working together to conduct research and share data within the most comprehensive hydrologic science network in the world.\u003c/p>\n\u003cp>“We’ve rarely studied all those things together at one site,” says \u003ca href=\"http://criticalzone.org/eel/people/person/dietrich-william/\" target=\"_blank\">William Dietrich\u003c/a>, professor of Earth and Planetary Science at UC Berkeley and lead Investigator at the Eel River CZO. “Geologists rarely work with microbiologists, and now all of us are working together at the same site to merge our information to see how each of the pieces work interdependently and impact the other pieces.”\u003c/p>\n\u003cfigure id=\"attachment_94856\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94856\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/IMG_3788-1440x1080.jpg\" alt=\"Researchers collect soil and rock samples at the Eel River CZO.\" width=\"640\" height=\"480\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-1440x1080.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-400x300.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-800x600.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-1180x885.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-960x720.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">Researchers collect soil and rock samples at the Eel River CZO. \u003ccite>(Credit: William Dietrich)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>To gather information, researchers at the ten national sites scale trees and towers hundreds of feet tall and drill deep into bedrock to place sensors that collect climate information. Their instruments transmit real-time measurements of things like air temperature, rock moisture, soil, air and water content and stream flow.\u003c/p>\n\u003cp>Some of the sites have so many instruments that the vegetation and landscapes look almost bionic. One tree in UC Merced’s \u003ca href=\"http://criticalzone.org/sierra/\" target=\"_blank\">Southern Sierra CZO\u003c/a> on the \u003ca href=\"https://en.wikipedia.org/wiki/North_Fork_Kings_River\" target=\"_blank\">North Fork Kings River\u003c/a> in Fresno County has been dubbed the “critical zone tree” because it’s adorned with nearly 200 sensors that measure things like humidity, temperature, and water movement through the tree via sap flux.\u003c/p>\n\u003cfigure id=\"attachment_94860\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94860\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/critical_zone_tree_1-1440x1080.jpg\" alt='The \"critical zone tree\" in UC Merced’s Southern Sierra CZO has nearly 200 sensors.' width=\"640\" height=\"480\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-1440x1080.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-400x300.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-800x600.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-1180x885.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-960x720.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">The \"critical zone tree\" in UC Merced’s Southern Sierra CZO has nearly 200 sensors. \u003ccite>(Credit: Southern Sierra CZO)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>As a plant physiologist, Dawson’s part in the project is to provide information on the role that plants and trees are playing in how water moves through the Eel River watershed.\u003c/p>\n\u003cp>“Seventy-five to eighty percent of the water on this planet is recycled through agriculture, through forests, through the plants,” he explains. “You take those plants away, you remove that straw in the Earth, that conduit for water to move out of the soil and back into the atmosphere, and that eventually can lead to deserts expanding. It changes the climate. We know for example when trees were cut down in the Amazon, there was less precipitation.”\u003c/p>\n\u003cp>One of the team’s main discoveries was that large amounts of water in the Eel River watershed is stored in the massive network of fractures in the rock that can be tens to hundreds of feet thick. This “rock water reservoir” is hidden deep inside the Earth, away from the influence of evaporation. It sits beneath the soil and above the saturated layer commonly called ground water and occupies the deepest part of what hydrologists call the “unsaturated zone”. Many trees reach their deep roots into this matrix of water-filled rock fissures and use the water stored there when other water sources dry out or become unavailable. Different types of rock store water in different ways.\u003c/p>\n\u003cp>“We are thinking of them as different types of sponges in the subsurface in the way they take up and retain moisture and give back that moisture to the vegetation that is rooted into them,” says Dietrich.\u003c/p>\n\u003cp>In additional to discovering the amount of water stored in underground rock fractures, Dawson and his team have learned that different types of trees actually use the “rock water” in very different ways depending on climate conditions. For example, the rock matrix inside slopes of hills is a key water resource for the largest trees in the watershed, like Douglas firs.\u003c/p>\n\u003cp>Hardwood trees like tanoak, madrone and live oaks rely largely on precipitation. But when drier times come, they shift to using the more stable groundwater below the surface and then may draw on some \"rock water\" in later summer and fall.\u003c/p>\n\u003cfigure id=\"attachment_94861\" class=\"wp-caption aligncenter\" style=\"max-width: 900px\">\u003cimg class=\"size-full wp-image-94861\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto.jpg\" alt=\"Todd Dawson trapping water vapor in the Eel River CZO.\" width=\"900\" height=\"675\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto.jpg 900w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto-400x300.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto-800x600.jpg 800w\" sizes=\"(max-width: 900px) 100vw, 900px\">\u003cfigcaption class=\"wp-caption-text\">Todd Dawson trapping water vapor in the Eel River CZO. \u003ccite>(Credit: Anthony Ambrose)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Conifers play a larger role in moving water out of the subsurface areas in winter and early spring, Dawson says. And hardwoods are playing a larger role in summer and fall.\u003c/p>\n\u003cp>“As climate and the forest change over time,” he adds, “this will lead to changes in how water enters and leaves these ecosystems because of what the vegetation on the land surface is composed of.”\u003c/p>\n\u003cp>The work being done within the National Critical Zone Observatories Program is timely because of a growing sense of urgency within the scientific community that as climate is changing and lands are changing because of human use of the land surface, we’re permanently disturbing the way the Earth works.\u003c/p>\n\u003cp>[ad floatright]\u003c/p>\n\u003cp>“If we don’t put a singular focus on understanding the critical zone,” explains Dawson, “as we march into the future and climate continues to change we’re not going to know how to mitigate for the kinds of impacts that humans and climate are actually having on resource balance on planet Earth.”\u003c/p>\n\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>[contextly_auto_sidebar id=\"ngqJALTleeosh2JhvSQygf3ACavDlNee\"]\u003c/p>\n\u003cp>According to a widely held belief, you can’t squeeze water from a rock. But researchers from UC Berkeley who are trying to better understand where water is stored in nature are challenging that old adage.\u003c/p>\n\u003cp>After nearly ten years of studying a steep, 20-square-mile area near the \u003ca href=\"https://en.wikipedia.org/wiki/South_Fork_Eel_River\" target=\"_blank\">South Fork Eel River\u003c/a> in coastal Mendocino County, the scientists have shown that for trees and other plants, deep and highly fractured rock formations beneath the Earth’s surface are a much larger water reservoir than was previously known.\u003c/p>\n\u003cfigure id=\"attachment_94852\" class=\"wp-caption aligncenter\" style=\"max-width: 900px\">\u003cimg class=\"size-full wp-image-94852\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto.jpg\" alt=\"LiDAR image illustrating a deep seated landslide underneath vegetative cover at the South Fork Eel River confluence with Tenmile Creek.\" width=\"900\" height=\"678\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto.jpg 900w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto-400x301.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/LiDAR3D_Landslide_Tenmile_900_678_80auto-800x603.jpg 800w\" sizes=\"(max-width: 900px) 100vw, 900px\">\u003cfigcaption class=\"wp-caption-text\">LiDAR image illustrating a deep seated landslide underneath vegetative cover at the South Fork Eel River confluence with Tenmile Creek. \u003ccite>(Credit: Collin Bode, 2010)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>The work to understand the role that “rock water” plays in the hydrologic cycle began in 2006 when researchers from UC Berkeley embarked on a multi-year study sponsored by the \u003ca href=\"http://www.wmkeck.org/\" target=\"_blank\">Keck Foundation \u003c/a>called the Hydrowatch project. It was designed to precisely monitor and measure the pathways of water in Mendocino County’s \u003ca href=\"http://angelo.berkeley.edu/\" target=\"_blank\">Angelo Coast Range Reserve \u003c/a>as it cycles from the groundwater table to the tops of trees and into the atmosphere.\u003c/p>\n\u003cp>“We were really interested in learning the fate of precipitation in the land surface,” explains \u003ca href=\"http://nature.berkeley.edu/dawsonlab/people/todd-dawson/\" target=\"_blank\">Todd Dawson\u003c/a>, professor of \u003ca href=\"https://ib.berkeley.edu/\" target=\"_blank\">Integrative Biology at UC Berkeley\u003c/a>. “So really trying to figure out when precipitation arrives at the site, where does it get into the rock, where does it get into the stream, how does is recharge the ground water, how much of it is used by the vegetation, and ultimately, how much of it ends up in the streams and going back out to the Pacific Ocean.”\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>Learning more about where water consumed by forests, or flowing through streams actually comes from is important, the scientists say, in better understanding the impact of climate change.\u003c/p>\n\u003cp>In 2013, the project expanded to become part of a landmark study sponsored by the National Science Foundation called the \u003ca href=\"http://criticalzone.org/national/\" target=\"_blank\">Critical Zone Observatories Program\u003c/a>. Today, the site is called the \u003ca href=\"http://criticalzone.org/eel/\" target=\"_blank\">Eel River CZO\u003c/a> and it’s part of a national network of ten similar watershed observation sites across the United States - each with unique climate, geology and vegetation.\u003c/p>\n\u003cfigure id=\"attachment_94854\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94854\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/CZONationalMap-1440x812.jpg\" alt=\"The ten environmental observatories within the CZO Network study the Earth's outer skin - where water, atmosphere, soil, ecosystems interact.\" width=\"640\" height=\"361\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-1440x812.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-400x225.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-800x451.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-1180x665.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/CZONationalMap-960x541.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">The ten environmental observatories within the CZO Network study the Earth's outer skin - where water, atmosphere, soil, ecosystems interact. \u003ccite>(Credit: National Critical Zone Observatories)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>The term “critical zone” is relatively new and is being used by scientists to define the zone that is tectonically, geologically and biologically active across the Earth’s surface. It represents a groundbreaking new approach to studying the \u003ca href=\"https://en.wikipedia.org/wiki/Water_cycle\" target=\"_blank\">hydrologic cycle\u003c/a>.\u003c/p>\n\u003cp>“The critical zone really tries to capture this idea of the zone between bedrock beneath our feet, and the top of the vegetation where the trees are interacting with the atmosphere,” explains Dawson. “So it’s everything in between. It’s rock, it’s soil, it’s the vegetation, and it’s the atmosphere that’s coupled to that vegetation. That’s the critical zone. It’s where life meets rock.”\u003c/p>\n\u003cfigure id=\"attachment_94858\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94858\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-1440x1667.jpg\" alt=\"The critical zone is defined as the zone that is tectonically, geologically and biologically active across the Earth’s surface.\" width=\"640\" height=\"741\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-1440x1667.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-400x463.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-800x926.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-1180x1366.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/czone_chorover_et_al_catalina_jemez_czo-960x1112.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">The critical zone is defined as the zone that is tectonically, geologically and biologically active across the Earth’s surface. \u003ccite>(Credit: Chorover et al., Catalina Jemez CZO)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Scientists across a broad range of earth, life and computer sciences – from microbiologists to geologists to electrical engineers - are now working together to conduct research and share data within the most comprehensive hydrologic science network in the world.\u003c/p>\n\u003cp>“We’ve rarely studied all those things together at one site,” says \u003ca href=\"http://criticalzone.org/eel/people/person/dietrich-william/\" target=\"_blank\">William Dietrich\u003c/a>, professor of Earth and Planetary Science at UC Berkeley and lead Investigator at the Eel River CZO. “Geologists rarely work with microbiologists, and now all of us are working together at the same site to merge our information to see how each of the pieces work interdependently and impact the other pieces.”\u003c/p>\n\u003cfigure id=\"attachment_94856\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94856\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/IMG_3788-1440x1080.jpg\" alt=\"Researchers collect soil and rock samples at the Eel River CZO.\" width=\"640\" height=\"480\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-1440x1080.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-400x300.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-800x600.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-1180x885.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/IMG_3788-960x720.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">Researchers collect soil and rock samples at the Eel River CZO. \u003ccite>(Credit: William Dietrich)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>To gather information, researchers at the ten national sites scale trees and towers hundreds of feet tall and drill deep into bedrock to place sensors that collect climate information. Their instruments transmit real-time measurements of things like air temperature, rock moisture, soil, air and water content and stream flow.\u003c/p>\n\u003cp>Some of the sites have so many instruments that the vegetation and landscapes look almost bionic. One tree in UC Merced’s \u003ca href=\"http://criticalzone.org/sierra/\" target=\"_blank\">Southern Sierra CZO\u003c/a> on the \u003ca href=\"https://en.wikipedia.org/wiki/North_Fork_Kings_River\" target=\"_blank\">North Fork Kings River\u003c/a> in Fresno County has been dubbed the “critical zone tree” because it’s adorned with nearly 200 sensors that measure things like humidity, temperature, and water movement through the tree via sap flux.\u003c/p>\n\u003cfigure id=\"attachment_94860\" class=\"wp-caption aligncenter\" style=\"max-width: 640px\">\u003cimg class=\"size-large wp-image-94860\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/critical_zone_tree_1-1440x1080.jpg\" alt='The \"critical zone tree\" in UC Merced’s Southern Sierra CZO has nearly 200 sensors.' width=\"640\" height=\"480\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-1440x1080.jpg 1440w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-400x300.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-800x600.jpg 800w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-1180x885.jpg 1180w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/critical_zone_tree_1-960x720.jpg 960w\" sizes=\"(max-width: 640px) 100vw, 640px\">\u003cfigcaption class=\"wp-caption-text\">The \"critical zone tree\" in UC Merced’s Southern Sierra CZO has nearly 200 sensors. \u003ccite>(Credit: Southern Sierra CZO)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>As a plant physiologist, Dawson’s part in the project is to provide information on the role that plants and trees are playing in how water moves through the Eel River watershed.\u003c/p>\n\u003cp>“Seventy-five to eighty percent of the water on this planet is recycled through agriculture, through forests, through the plants,” he explains. “You take those plants away, you remove that straw in the Earth, that conduit for water to move out of the soil and back into the atmosphere, and that eventually can lead to deserts expanding. It changes the climate. We know for example when trees were cut down in the Amazon, there was less precipitation.”\u003c/p>\n\u003cp>One of the team’s main discoveries was that large amounts of water in the Eel River watershed is stored in the massive network of fractures in the rock that can be tens to hundreds of feet thick. This “rock water reservoir” is hidden deep inside the Earth, away from the influence of evaporation. It sits beneath the soil and above the saturated layer commonly called ground water and occupies the deepest part of what hydrologists call the “unsaturated zone”. Many trees reach their deep roots into this matrix of water-filled rock fissures and use the water stored there when other water sources dry out or become unavailable. Different types of rock store water in different ways.\u003c/p>\n\u003cp>“We are thinking of them as different types of sponges in the subsurface in the way they take up and retain moisture and give back that moisture to the vegetation that is rooted into them,” says Dietrich.\u003c/p>\n\u003cp>In additional to discovering the amount of water stored in underground rock fractures, Dawson and his team have learned that different types of trees actually use the “rock water” in very different ways depending on climate conditions. For example, the rock matrix inside slopes of hills is a key water resource for the largest trees in the watershed, like Douglas firs.\u003c/p>\n\u003cp>Hardwood trees like tanoak, madrone and live oaks rely largely on precipitation. But when drier times come, they shift to using the more stable groundwater below the surface and then may draw on some \"rock water\" in later summer and fall.\u003c/p>\n\u003cfigure id=\"attachment_94861\" class=\"wp-caption aligncenter\" style=\"max-width: 900px\">\u003cimg class=\"size-full wp-image-94861\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto.jpg\" alt=\"Todd Dawson trapping water vapor in the Eel River CZO.\" width=\"900\" height=\"675\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto.jpg 900w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto-400x300.jpg 400w, https://ww2.kqed.org/app/uploads/sites/39/2015/11/todd_dawson_trapping_vapor_900_675_80auto-800x600.jpg 800w\" sizes=\"(max-width: 900px) 100vw, 900px\">\u003cfigcaption class=\"wp-caption-text\">Todd Dawson trapping water vapor in the Eel River CZO. \u003ccite>(Credit: Anthony Ambrose)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>Conifers play a larger role in moving water out of the subsurface areas in winter and early spring, Dawson says. And hardwoods are playing a larger role in summer and fall.\u003c/p>\n\u003cp>“As climate and the forest change over time,” he adds, “this will lead to changes in how water enters and leaves these ecosystems because of what the vegetation on the land surface is composed of.”\u003c/p>\n\u003cp>The work being done within the National Critical Zone Observatories Program is timely because of a growing sense of urgency within the scientific community that as climate is changing and lands are changing because of human use of the land surface, we’re permanently disturbing the way the Earth works.\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"title": "What’s the Best Path to a Sustainable Future?",
"headTitle": "What’s the Best Path to a Sustainable Future? | KQED",
"content": "\u003ch3>\u003cstrong>To respond to the Do Now, you can comment below or tweet your response. Be sure to begin your tweet with \u003cem>@KQEDEdspace\u003c/em> and end it with \u003cem>#DoNowHabits\u003c/em>\u003c/strong>\u003c/h3>\n\u003cp>For more info on how to use Twitter, click \u003ca href=\"http://ww2.kqed.org/education/how-to-use-twitter-in-your-teaching-practice/\">here\u003c/a>.\u003c/p>\n\u003chr>\n\u003ch2>\u003cstrong>Do Now\u003c/strong>\u003c/h2>\n\u003cp>What’s the best way to create a sustainable future in a changing climate — through government regulation, or through changing people’s habits and attitudes?\u003c/p>\n\u003ch2>\u003cstrong>Introduction\u003c/strong>\u003c/h2>\n\u003cp>As we face the consequences of a changing climate, many people wonder how we can most effectively change the consumptive habits of U.S. citizens. The government has the ability to implement taxes and regulations that put restrictions on carbon emissions, and to provide subsidies to companies in order to make environmentally friendly options cheaper and more lucrative. However, with a gridlocked Congress and slow administrative progress, is it more effective to change people’s behavior and attitudes or affect change through government action?\u003c/p>\n\u003cp>Some say yes. For example, in Japan, social habits have a large impact on resource use and waste produced. According to the \u003ca href=\"http://data.worldbank.org/indicator/EN.ATM.CO2E.PC/countries?display=default\" target=\"_blank\" rel=\"noopener\">World Bank\u003c/a>, Japan emits 9.2 metric tons of carbon dioxide per capita (compared to the United States’ nearly 17.6). With comparable economies, what difference could produce such skewed results? In addition to the small footprint and corresponding energy efficiency of many Japanese homes, some believe that the cooperation, investment and attitude of the people of Japan goes a long way towards explaining the difference. The culture of Japan values land very highly, and limits landfill. According to Jacquie Ottman, the founder of \u003ca href=\"http://www.wehatetowaste.com/japanese-style/\" target=\"_blank\" rel=\"noopener\">People Towels\u003c/a>, she found no paper towel dispensers or electric hand dryers during her travels in Japan — each person carried their own hand towel. Contrast this with the United States, where we value convenience (and have lots of room for landfill!). A \u003ca href=\"http://www.rit.edu/affiliate/nysp2i/sites/rit.edu.affiliate.nysp2i/files/12rdsc15_sustainable_hand_drying_nocvr.pdf\" target=\"_blank\" rel=\"noopener\">study\u003c/a> completed by students at the Rochester Institute of Technology found that by switching to electric hand dryers on a college campus, carbon emissions from hand drying could be reduced by 75% compared to paper towel use. But, when participants were asked which they preferred, 64.6% said paper towels. Informational campaigns have been shown to have little effect on consumer preferences and behavior, so encouraging environmentally habits is more than quoting statistics.\u003c/p>\n\u003cp>With this in mind, climate change activists and advocates are \u003ca href=\"http://www.aaanet.org/cmtes/commissions/CCTF/upload/AAA-Statement-on-Humanity-and-Climate-Change.pdf\" target=\"_blank\" rel=\"noopener\">looking to the social sciences\u003c/a> to understand what will motivate behavior change for consumers and communities, and whether it’s a better route than government mandates. What do you think? Are top-down regulations the best way to reduce greenhouse gas emissions or should we focus our efforts on changing social habits and attitudes? How would you suggest trying trying to change people’s behavior?\u003c/p>\n\u003ch2>\u003cstrong>Resource\u003c/strong>\u003c/h2>\n\u003cp>https://www.youtube.com/watch?v=l5d8GW6GdR0\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>\u003cstrong>VIDEO: \u003ca href=\"https://youtu.be/l5d8GW6GdR0\">Three Myths of Behavior Change\u003c/a> (TEDxCSU)\u003c/strong>\u003cbr>\nA sociologist discusses the information and support that people need to change their behavior. (Suggested segment to watch: 8:03-12:58)\u003c/p>\n\u003chr>\n\u003ch3>\u003cstrong>To respond to the Do Now, you can comment below or tweet your response. Be sure to begin your tweet with \u003cem>@KQEDedspace\u003c/em> and end it with \u003cem>#DoNowHabits\u003c/em>\u003c/strong>\u003c/h3>\n\u003cp>For more info on how to use Twitter, click \u003ca href=\"http://ww2.kqed.org/education/how-to-use-twitter-in-your-teaching-practice/\">here\u003c/a>.\u003c/p>\n\u003cp>\u003cstrong>We encourage students to reply to other people’s tweets to foster more of a conversation. Also, if students tweet their personal opinions, ask them to support their ideas with links to interesting/credible articles online (adding a nice research component) or retweet other people’s ideas that they agree/disagree/find amusing. We also value student-produced media linked to their tweets. You can visit our \u003ca href=\"http://ww2.kqed.org/education/category/tools/video-tutorials/\">video tutorials\u003c/a> that showcase how to use several web-based production tools. Of course, do as you can… and any contribution is most welcomed.\u003c/strong>\u003c/p>\n\u003chr>\n\u003ch2>\u003cstrong>More Resources\u003c/strong>\u003c/h2>\n\u003cp>\u003cstrong>ARTICLE: \u003ca href=\"http://www.theguardian.com/sustainable-business/behavioural-insights/behaviour-change-sustainability-debate\">Ten Things We Learnt About Behaviour Change And Sustainability\u003c/a> (The Guardian)\u003c/strong>\u003cbr>\nThis round-up from a conference in the UK shares information from experts in the field of climate change response and sustainable development.\u003c/p>\n\u003cp>\u003cstrong>VIDEO: \u003ca href=\"http://www.pbs.org/wnet/need-to-know/environment/an-island-without-oil/1328/\">An Island Without Oil\u003c/a> (PBS)\u003c/strong>\u003cbr>\nSwitching this small island entirely to renewable energy was a question of convincing the locals. How did they do it?\u003c/p>\n\u003cp>\u003cstrong>AUDIO:\u003ca href=\"http://www.npr.org/templates/story/story.php?storyId=104803094\"> Using Psychology To Save You From Yourself\u003c/a> (NPR)\u003c/strong>\u003cbr>\nPolicymakers use research about how people make decisions in order to change behavior.\u003c/p>\n\u003chr>\n\u003cp>\u003cem>KQED Education partners with phenomenal organizations to bring you the Science Do Now activities. The Science Do Now is posted every two weeks on Tuesday. This post was contributed by youth volunteers and interns in the \u003ca href=\"http://www.chabotspace.org/ge-about.htm\" target=\"_blank\" rel=\"noopener\">Galaxy Explorers\u003c/a> program at Chabot Space & Science Center. Explorers share science through live public demonstrations, hands-on activities, and outreach events in their schools and communities. Open to all Bay Area teens, the program focuses on providing support and opportunities in the sciences to Oakland youth historically underrepresented in STEM careers.\u003c/em>\u003c/p>\n\u003cp>\u003c/p>\n\u003cp>Chabot’s mission is to inspire and educate visitors about Planet Earth and the Universe through exhibits, telescope viewing, planetarium shows, interactive programs, and engaging experiences to connect visitors with the earth and environment, astronomy and space travel. Chabot’s education programs promote STEM literacy skills needed for a 21st-century society and workforce.\u003cbr>\n\u003c/p>\n\n",
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"excerpt": "As we face the consequences of a changing climate, many people wonder how we can most effectively change the consumptive habits of U.S. citizens. Is it more effective to change people’s behavior and attitudes or have the government implement regulations?\r\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003ch3>\u003cstrong>To respond to the Do Now, you can comment below or tweet your response. Be sure to begin your tweet with \u003cem>@KQEDEdspace\u003c/em> and end it with \u003cem>#DoNowHabits\u003c/em>\u003c/strong>\u003c/h3>\n\u003cp>For more info on how to use Twitter, click \u003ca href=\"http://ww2.kqed.org/education/how-to-use-twitter-in-your-teaching-practice/\">here\u003c/a>.\u003c/p>\n\u003chr>\n\u003ch2>\u003cstrong>Do Now\u003c/strong>\u003c/h2>\n\u003cp>What’s the best way to create a sustainable future in a changing climate — through government regulation, or through changing people’s habits and attitudes?\u003c/p>\n\u003ch2>\u003cstrong>Introduction\u003c/strong>\u003c/h2>\n\u003cp>As we face the consequences of a changing climate, many people wonder how we can most effectively change the consumptive habits of U.S. citizens. The government has the ability to implement taxes and regulations that put restrictions on carbon emissions, and to provide subsidies to companies in order to make environmentally friendly options cheaper and more lucrative. However, with a gridlocked Congress and slow administrative progress, is it more effective to change people’s behavior and attitudes or affect change through government action?\u003c/p>\n\u003cp>Some say yes. For example, in Japan, social habits have a large impact on resource use and waste produced. According to the \u003ca href=\"http://data.worldbank.org/indicator/EN.ATM.CO2E.PC/countries?display=default\" target=\"_blank\" rel=\"noopener\">World Bank\u003c/a>, Japan emits 9.2 metric tons of carbon dioxide per capita (compared to the United States’ nearly 17.6). With comparable economies, what difference could produce such skewed results? In addition to the small footprint and corresponding energy efficiency of many Japanese homes, some believe that the cooperation, investment and attitude of the people of Japan goes a long way towards explaining the difference. The culture of Japan values land very highly, and limits landfill. According to Jacquie Ottman, the founder of \u003ca href=\"http://www.wehatetowaste.com/japanese-style/\" target=\"_blank\" rel=\"noopener\">People Towels\u003c/a>, she found no paper towel dispensers or electric hand dryers during her travels in Japan — each person carried their own hand towel. Contrast this with the United States, where we value convenience (and have lots of room for landfill!). A \u003ca href=\"http://www.rit.edu/affiliate/nysp2i/sites/rit.edu.affiliate.nysp2i/files/12rdsc15_sustainable_hand_drying_nocvr.pdf\" target=\"_blank\" rel=\"noopener\">study\u003c/a> completed by students at the Rochester Institute of Technology found that by switching to electric hand dryers on a college campus, carbon emissions from hand drying could be reduced by 75% compared to paper towel use. But, when participants were asked which they preferred, 64.6% said paper towels. Informational campaigns have been shown to have little effect on consumer preferences and behavior, so encouraging environmentally habits is more than quoting statistics.\u003c/p>\n\u003cp>With this in mind, climate change activists and advocates are \u003ca href=\"http://www.aaanet.org/cmtes/commissions/CCTF/upload/AAA-Statement-on-Humanity-and-Climate-Change.pdf\" target=\"_blank\" rel=\"noopener\">looking to the social sciences\u003c/a> to understand what will motivate behavior change for consumers and communities, and whether it’s a better route than government mandates. What do you think? Are top-down regulations the best way to reduce greenhouse gas emissions or should we focus our efforts on changing social habits and attitudes? How would you suggest trying trying to change people’s behavior?\u003c/p>\n\u003ch2>\u003cstrong>Resource\u003c/strong>\u003c/h2>\u003c/p>\u003cp>\u003cspan class='utils-parseShortcode-shortcodes-__youtubeShortcode__embedYoutube'>\n \u003cspan class='utils-parseShortcode-shortcodes-__youtubeShortcode__embedYoutubeInside'>\n \u003ciframe\n loading='lazy'\n class='utils-parseShortcode-shortcodes-__youtubeShortcode__youtubePlayer'\n type='text/html'\n src='//www.youtube.com/embed/l5d8GW6GdR0'\n title='//www.youtube.com/embed/l5d8GW6GdR0'\n allowfullscreen='true'\n style='border:0;'>\u003c/iframe>\n \u003c/span>\n \u003c/span>\u003c/p>\u003cp>\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>\u003cstrong>VIDEO: \u003ca href=\"https://youtu.be/l5d8GW6GdR0\">Three Myths of Behavior Change\u003c/a> (TEDxCSU)\u003c/strong>\u003cbr>\nA sociologist discusses the information and support that people need to change their behavior. (Suggested segment to watch: 8:03-12:58)\u003c/p>\n\u003chr>\n\u003ch3>\u003cstrong>To respond to the Do Now, you can comment below or tweet your response. Be sure to begin your tweet with \u003cem>@KQEDedspace\u003c/em> and end it with \u003cem>#DoNowHabits\u003c/em>\u003c/strong>\u003c/h3>\n\u003cp>For more info on how to use Twitter, click \u003ca href=\"http://ww2.kqed.org/education/how-to-use-twitter-in-your-teaching-practice/\">here\u003c/a>.\u003c/p>\n\u003cp>\u003cstrong>We encourage students to reply to other people’s tweets to foster more of a conversation. Also, if students tweet their personal opinions, ask them to support their ideas with links to interesting/credible articles online (adding a nice research component) or retweet other people’s ideas that they agree/disagree/find amusing. We also value student-produced media linked to their tweets. You can visit our \u003ca href=\"http://ww2.kqed.org/education/category/tools/video-tutorials/\">video tutorials\u003c/a> that showcase how to use several web-based production tools. Of course, do as you can… and any contribution is most welcomed.\u003c/strong>\u003c/p>\n\u003chr>\n\u003ch2>\u003cstrong>More Resources\u003c/strong>\u003c/h2>\n\u003cp>\u003cstrong>ARTICLE: \u003ca href=\"http://www.theguardian.com/sustainable-business/behavioural-insights/behaviour-change-sustainability-debate\">Ten Things We Learnt About Behaviour Change And Sustainability\u003c/a> (The Guardian)\u003c/strong>\u003cbr>\nThis round-up from a conference in the UK shares information from experts in the field of climate change response and sustainable development.\u003c/p>\n\u003cp>\u003cstrong>VIDEO: \u003ca href=\"http://www.pbs.org/wnet/need-to-know/environment/an-island-without-oil/1328/\">An Island Without Oil\u003c/a> (PBS)\u003c/strong>\u003cbr>\nSwitching this small island entirely to renewable energy was a question of convincing the locals. How did they do it?\u003c/p>\n\u003cp>\u003cstrong>AUDIO:\u003ca href=\"http://www.npr.org/templates/story/story.php?storyId=104803094\"> Using Psychology To Save You From Yourself\u003c/a> (NPR)\u003c/strong>\u003cbr>\nPolicymakers use research about how people make decisions in order to change behavior.\u003c/p>\n\u003chr>\n\u003cp>\u003cem>KQED Education partners with phenomenal organizations to bring you the Science Do Now activities. The Science Do Now is posted every two weeks on Tuesday. This post was contributed by youth volunteers and interns in the \u003ca href=\"http://www.chabotspace.org/ge-about.htm\" target=\"_blank\" rel=\"noopener\">Galaxy Explorers\u003c/a> program at Chabot Space & Science Center. Explorers share science through live public demonstrations, hands-on activities, and outreach events in their schools and communities. Open to all Bay Area teens, the program focuses on providing support and opportunities in the sciences to Oakland youth historically underrepresented in STEM careers.\u003c/em>\u003c/p>\n\u003cp>\u003c/p>\n\u003cp>Chabot’s mission is to inspire and educate visitors about Planet Earth and the Universe through exhibits, telescope viewing, planetarium shows, interactive programs, and engaging experiences to connect visitors with the earth and environment, astronomy and space travel. Chabot’s education programs promote STEM literacy skills needed for a 21st-century society and workforce.\u003cbr>\n\u003c/p>\n\n\u003c/div>\u003c/p>",
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"content": "\u003cp>As revelers uncorked wine bottles to celebrate the holidays and ring in the New Year, more of them were celebrating with a glass of California-grown Pinot Noir than a decade ago. But the growing market for this complex, subtle wine could soon run up against climate conditions that make it increasingly difficult to grow top-quality wines in the state, especially ones that do best in cool climates, like Pinot Noir.\u003c/p>\n\u003cfigure id=\"attachment_73658\" class=\"wp-caption alignright\" style=\"max-width: 300px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Andrew-Walker_UC-Davis_02_6-26-07_resized.jpg\">\u003cimg class=\"size-thumbnail wp-image-73658\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Andrew-Walker_UC-Davis_02_6-26-07_resized-300x169.jpg\" alt=\"“Pinot Noir is being grown in hot areas of California where it doesn’t grow so well,” said Andrew Walker, professor of viticulture at the University of California, Davis. He examines a Listán Prieto vine on the UC Davis campus. This wine grape was brought to California by Spaniards and was the first to be planted in the state. (Photo by Joan Johnson Miller/KQED, 2007).\" width=\"300\" height=\"169\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">“Pinot Noir is being grown in hot areas of California where it doesn’t grow so well,” said Andrew Walker, professor of viticulture at the University of California, Davis. He examines a Listán Prieto vine on the UC Davis campus. This wine grape was brought to California by Spaniards and was the first to be planted in the state. (Photo by Joan Johnson Miller/KQED, 2007).\u003c/figcaption>\u003c/figure>\n\u003cp>It just goes to show, scientists say, that which wines become popular has more to do with personal taste and marketing than with warming temperatures and water availability.\u003c/p>\n\u003cp>“Pinot Noir is being grown in hot areas of California where it doesn’t grow so well,” said Andrew Walker, a professor of viticulture at the University of California, Davis. “The public wants it, and so we’re making it, even if it’s not that great.”\u003c/p>\n\u003cp>Nearly 260,000 tons of Pinot Noir grapes were crushed in California in 2013. That’s four times the 58,000 tons crushed in 2003, according to the California Department of Food and Agriculture.\u003c/p>\n\u003cp>In recent years, Pinot Noir has been extensively planted in coastal Sonoma County, where the grapes produce top-quality wines. But the grape has also spread to warmer parts of California. In 2013, some 23,000 tons of Pinot Noir were crushed in the hot Central Valley, in the area between Madera and Kern counties.\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>Pinot Noir is a particularly finicky grape, said David Graves, the co-owner of Saintsbury Winery, in Napa Valley’s Carneros region, which produces renowned Pinot Noir wines. The marine fog that enters San Francisco Bay blankets Carneros and makes it an ideal place to grow good Pinot Noir.\u003c/p>\n\u003cfigure id=\"attachment_73657\" class=\"wp-caption alignleft\" style=\"max-width: 300px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/David_Graves_Saintsbury_winery_2007_resized.jpg\">\u003cimg class=\"size-thumbnail wp-image-73657\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/David_Graves_Saintsbury_winery_2007_resized-300x169.jpg\" alt=\"David Graves, co-owner of Saintsbury Winery, in the Carneros region of the Napa Valley, an area known for the quality of its Pinot Noir wines. Graves stands next to a weather station that monitors conditions in his vineyards. (Photo by Joan Johnson Miller/KQED, 2007).\" width=\"300\" height=\"169\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">David Graves, co-owner of Saintsbury Winery, in the Carneros region of the Napa Valley, an area known for the quality of its Pinot Noir wines. Graves stands next to a weather station that monitors conditions in his vineyards. (Photo by Joan Johnson Miller/KQED, 2007).\u003c/figcaption>\u003c/figure>\n\u003cp>“It doesn’t flourish in a lot of climates. It’s not a very forgiving grape,” said Graves. “It tends to like cooler spots.”\u003c/p>\n\u003cp>Scientists at Stanford, Purdue, Utah State University and two other research institutes estimate that by 2040 global warming is likely to \u003ca href=\"http://iopscience.iop.org/1748-9326/6/2/024024/fulltext/\">cut in half the area in Napa and Sonoma valleys\u003c/a> where temperatures are suitable to grow top-quality wine grapes. To come up with their calculations, researchers estimated that global temperature would climb one degree Celsius (about two degrees Fahrenheit), which is on the lower end of global warming estimates, said Stanford’s Noah Diffenbaugh.\u003c/p>\n\u003cp>Temperatures above 95 degrees Fahrenheit, for long periods of time, can hurt wine quality. To produce good wines, grapes need heat, but it has to be followed by a cooling-off period. Heat produces the sugars that will become alcohol, while cooling slows this process long enough for the compounds that produce the flavors in wine to develop. Temperatures above 95 degrees, without subsequent cooling, degrade compounds called anthocyanins, which give red wines their deep color and contribute to their complex flavors.\u003c/p>\n\u003cfigure id=\"attachment_73659\" class=\"wp-caption alignright\" style=\"max-width: 300px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Pinot_Noir_Saintsbury_winery_2007_resized.jpg\">\u003cimg class=\"size-thumbnail wp-image-73659\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Pinot_Noir_Saintsbury_winery_2007_resized-300x169.jpg\" alt=\"Pinot Noir is a variety that does well in cool climates and is particularly vulnerable to warming temperatures. These vines were planted at Saintsbury Winery, in Napa Valley. (Photo by Joan Johnson Miller/KQED, 2007).\" width=\"300\" height=\"169\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Pinot Noir is a variety that does well in cool climates and is particularly vulnerable to warming temperatures. These vines were planted at Saintsbury Winery, in Napa Valley. (Photo by Joan Johnson Miller/KQED, 2007).\u003c/figcaption>\u003c/figure>\n\u003cp>The boom in Pinot Noir is part of the consolidation of a handful of well-known, popular wines in the state – Chardonnay, Merlot, Sauvignon Blanc, Cabernet Sauvignon and Zinfandel. Scientists say that more effort should be put into testing wine varieties new to California that might do well as temperatures climb.\u003c/p>\n\u003cp>“In a warming climate we need more diversity,” said Walker.\u003c/p>\n\u003cp>One of the world’s largest wine and beer companies, Constellation Brands, is collaborating with UC Davis on research into warm-climate varieties. They’re testing grapes like Petite Sirah and Petit Verdot, which are somewhat known in California already, and some more obscure varieties like white wine grapes Fiano and Petit Manseng, said UC Davis’ Matthew Fidelibus, in charge of the trials at the university’s Kearney Agricultural Research and Extension Center, in Parlier.\u003c/p>\n\u003cp>But whether or not wines made from these grapes catch on depends not just on whether researchers can produce good-quality grapes and abundant yields. Marketing and economics are key, said Walker. And for now, wines like Pinot Noir, which are fetching a good price for growers and are popular at the store, reign supreme, climate predictions aside.\u003c/p>\n\u003cp>\u003cem>This video, originally posted on July 31, 2007, was updated on Jan. 6, 2015.\u003c/em>\u003c/p>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>More from QUEST:\u003c/strong>\u003c/p>\n\u003cul>\n\u003cli>\u003ca href=\"http://blogs.kqed.org/science/2014/12/30/warm-temps-mean-less-snow-for-the-sierra/\">Warm Temps Mean Less Snow for the Sierra\u003c/a>\u003c/li>\n\u003cli>\u003ca href=\"http://blogs.kqed.org/science/2014/12/08/californias-drought-is-it-global-warming/\">California’s Drought: Is it Global Warming?\u003c/a>\u003c/li>\n\u003c/ul>\n\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>As revelers uncorked wine bottles to celebrate the holidays and ring in the New Year, more of them were celebrating with a glass of California-grown Pinot Noir than a decade ago. But the growing market for this complex, subtle wine could soon run up against climate conditions that make it increasingly difficult to grow top-quality wines in the state, especially ones that do best in cool climates, like Pinot Noir.\u003c/p>\n\u003cfigure id=\"attachment_73658\" class=\"wp-caption alignright\" style=\"max-width: 300px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Andrew-Walker_UC-Davis_02_6-26-07_resized.jpg\">\u003cimg class=\"size-thumbnail wp-image-73658\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Andrew-Walker_UC-Davis_02_6-26-07_resized-300x169.jpg\" alt=\"“Pinot Noir is being grown in hot areas of California where it doesn’t grow so well,” said Andrew Walker, professor of viticulture at the University of California, Davis. He examines a Listán Prieto vine on the UC Davis campus. This wine grape was brought to California by Spaniards and was the first to be planted in the state. (Photo by Joan Johnson Miller/KQED, 2007).\" width=\"300\" height=\"169\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">“Pinot Noir is being grown in hot areas of California where it doesn’t grow so well,” said Andrew Walker, professor of viticulture at the University of California, Davis. He examines a Listán Prieto vine on the UC Davis campus. This wine grape was brought to California by Spaniards and was the first to be planted in the state. (Photo by Joan Johnson Miller/KQED, 2007).\u003c/figcaption>\u003c/figure>\n\u003cp>It just goes to show, scientists say, that which wines become popular has more to do with personal taste and marketing than with warming temperatures and water availability.\u003c/p>\n\u003cp>“Pinot Noir is being grown in hot areas of California where it doesn’t grow so well,” said Andrew Walker, a professor of viticulture at the University of California, Davis. “The public wants it, and so we’re making it, even if it’s not that great.”\u003c/p>\n\u003cp>Nearly 260,000 tons of Pinot Noir grapes were crushed in California in 2013. That’s four times the 58,000 tons crushed in 2003, according to the California Department of Food and Agriculture.\u003c/p>\n\u003cp>In recent years, Pinot Noir has been extensively planted in coastal Sonoma County, where the grapes produce top-quality wines. But the grape has also spread to warmer parts of California. In 2013, some 23,000 tons of Pinot Noir were crushed in the hot Central Valley, in the area between Madera and Kern counties.\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>Pinot Noir is a particularly finicky grape, said David Graves, the co-owner of Saintsbury Winery, in Napa Valley’s Carneros region, which produces renowned Pinot Noir wines. The marine fog that enters San Francisco Bay blankets Carneros and makes it an ideal place to grow good Pinot Noir.\u003c/p>\n\u003cfigure id=\"attachment_73657\" class=\"wp-caption alignleft\" style=\"max-width: 300px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/David_Graves_Saintsbury_winery_2007_resized.jpg\">\u003cimg class=\"size-thumbnail wp-image-73657\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/David_Graves_Saintsbury_winery_2007_resized-300x169.jpg\" alt=\"David Graves, co-owner of Saintsbury Winery, in the Carneros region of the Napa Valley, an area known for the quality of its Pinot Noir wines. Graves stands next to a weather station that monitors conditions in his vineyards. (Photo by Joan Johnson Miller/KQED, 2007).\" width=\"300\" height=\"169\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">David Graves, co-owner of Saintsbury Winery, in the Carneros region of the Napa Valley, an area known for the quality of its Pinot Noir wines. Graves stands next to a weather station that monitors conditions in his vineyards. (Photo by Joan Johnson Miller/KQED, 2007).\u003c/figcaption>\u003c/figure>\n\u003cp>“It doesn’t flourish in a lot of climates. It’s not a very forgiving grape,” said Graves. “It tends to like cooler spots.”\u003c/p>\n\u003cp>Scientists at Stanford, Purdue, Utah State University and two other research institutes estimate that by 2040 global warming is likely to \u003ca href=\"http://iopscience.iop.org/1748-9326/6/2/024024/fulltext/\">cut in half the area in Napa and Sonoma valleys\u003c/a> where temperatures are suitable to grow top-quality wine grapes. To come up with their calculations, researchers estimated that global temperature would climb one degree Celsius (about two degrees Fahrenheit), which is on the lower end of global warming estimates, said Stanford’s Noah Diffenbaugh.\u003c/p>\n\u003cp>Temperatures above 95 degrees Fahrenheit, for long periods of time, can hurt wine quality. To produce good wines, grapes need heat, but it has to be followed by a cooling-off period. Heat produces the sugars that will become alcohol, while cooling slows this process long enough for the compounds that produce the flavors in wine to develop. Temperatures above 95 degrees, without subsequent cooling, degrade compounds called anthocyanins, which give red wines their deep color and contribute to their complex flavors.\u003c/p>\n\u003cfigure id=\"attachment_73659\" class=\"wp-caption alignright\" style=\"max-width: 300px\">\u003ca href=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Pinot_Noir_Saintsbury_winery_2007_resized.jpg\">\u003cimg class=\"size-thumbnail wp-image-73659\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2007/07/Pinot_Noir_Saintsbury_winery_2007_resized-300x169.jpg\" alt=\"Pinot Noir is a variety that does well in cool climates and is particularly vulnerable to warming temperatures. These vines were planted at Saintsbury Winery, in Napa Valley. (Photo by Joan Johnson Miller/KQED, 2007).\" width=\"300\" height=\"169\">\u003c/a>\u003cfigcaption class=\"wp-caption-text\">Pinot Noir is a variety that does well in cool climates and is particularly vulnerable to warming temperatures. These vines were planted at Saintsbury Winery, in Napa Valley. (Photo by Joan Johnson Miller/KQED, 2007).\u003c/figcaption>\u003c/figure>\n\u003cp>The boom in Pinot Noir is part of the consolidation of a handful of well-known, popular wines in the state – Chardonnay, Merlot, Sauvignon Blanc, Cabernet Sauvignon and Zinfandel. Scientists say that more effort should be put into testing wine varieties new to California that might do well as temperatures climb.\u003c/p>\n\u003cp>“In a warming climate we need more diversity,” said Walker.\u003c/p>\n\u003cp>One of the world’s largest wine and beer companies, Constellation Brands, is collaborating with UC Davis on research into warm-climate varieties. They’re testing grapes like Petite Sirah and Petit Verdot, which are somewhat known in California already, and some more obscure varieties like white wine grapes Fiano and Petit Manseng, said UC Davis’ Matthew Fidelibus, in charge of the trials at the university’s Kearney Agricultural Research and Extension Center, in Parlier.\u003c/p>\n\u003cp>But whether or not wines made from these grapes catch on depends not just on whether researchers can produce good-quality grapes and abundant yields. Marketing and economics are key, said Walker. And for now, wines like Pinot Noir, which are fetching a good price for growers and are popular at the store, reign supreme, climate predictions aside.\u003c/p>\n\u003cp>\u003cem>This video, originally posted on July 31, 2007, was updated on Jan. 6, 2015.\u003c/em>\u003c/p>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>More from QUEST:\u003c/strong>\u003c/p>\n\u003cul>\n\u003cli>\u003ca href=\"http://blogs.kqed.org/science/2014/12/30/warm-temps-mean-less-snow-for-the-sierra/\">Warm Temps Mean Less Snow for the Sierra\u003c/a>\u003c/li>\n\u003cli>\u003ca href=\"http://blogs.kqed.org/science/2014/12/08/californias-drought-is-it-global-warming/\">California’s Drought: Is it Global Warming?\u003c/a>\u003c/li>\n\u003c/ul>\n\n\u003c/div>\u003c/p>",
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"disqusTitle": "What Is Climate Change?",
"title": "What Is Climate Change?",
"headTitle": "QUEST | KQED Science",
"content": "\u003cfigure id=\"attachment_112575\" class=\"wp-caption alignleft\" style=\"max-width: 560px\">\u003cimg class=\"size-full wp-image-112575\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2014/12/koppenzones.jpg\" alt=\"Map of the major climate zones in the United States\" width=\"560\" height=\"358\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2014/12/koppenzones.jpg 560w, https://ww2.kqed.org/app/uploads/sites/39/2014/12/koppenzones-400x256.jpg 400w\" sizes=\"(max-width: 560px) 100vw, 560px\">\u003cfigcaption class=\"wp-caption-text\">Map of the major climate zones in the United States. A: tropical climates, B: dry climates, C: moist subtropical mid-latitude climates, D: moist continental mid-latitude climates, H: highlands \u003ccite>(Courtesy of NOAA)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>\u003cem>Check out this \u003ca href=\"https://www.weather.gov/jetstream/climates\">resource\u003c/a> from NOAA to learn about the major climate zones in the continental United States.\u003c/em>\u003c/p>\n\u003cp>There's a lot of talk about climate change in the news, but it's a topic that can be really hard to understand. What exactly is climate change? Put simply, climate change is a change in average weather patterns over a long period of time. However, people often confuse natural variations in weather with climate change. In order to understand the distinction, you have to understand the difference between weather and climate. Weather refers to atmospheric conditions like temperature, precipitation, and wind at a specific time and place, whereas climate refers to long-term trends of weather.\u003c/p>\n\u003cp>Look outside. Is it sunny? Is it raining? Is it snowing? Is it windy? Whatever is happening right now is weather. Weather varies from day to day. Some days it might be sunny, other days in might be cloudy and rainy.\u003c/p>\n\u003cp>A region’s climate is determined by weather patterns -- patterns in precipitation, temperature, humidity and wind -- usually averaged over a 30-year span. Climate gives us an idea of what the weather in a particular region might be. For example, if it’s winter in Miami, you don’t expect it to snow. That’s because Miami has a tropical climate with warm temperatures year-round and lots of rain. Likewise, if it's winter in Maine, you don't expect it to be 95 degrees Fahrenheit.\u003c/p>\n\u003cp>To determine changes in climate, you have to look at long-term trends and averages of past weather data. For example, past weather data from California's Central Valley shows that this area is experiencing warmer temperatures and less fog compared to what would be normal variations in weather. This suggests a changing climate.\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>Climate change is happening now and is already impacting the planet. With climate change, we are seeing shifts in regional climate. For example, spring temperatures in the Midwest arrive about two weeks earlier compared to the 1950s. Parts of the Northeast are experiencing an increase in heavy rain and snow events, and parts of the Southeast are having more days with temperatures above 95 degrees. These are all examples of changes to regional climates.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>What does the term \"weather\" mean?\u003c/li>\n\u003cli>What is climate?\u003c/li>\n\u003cli>What does the term \"climate change\" mean?\u003c/li>\n\u003cli>Describe the climate where you live.\u003c/li>\n\u003c/ul>\n\u003cp>This post is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>This explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\n",
"disqusIdentifier": "73110 http://science.kqed.org/quest/?p=73110",
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"excerpt": "Explore this QUEST interactive graphic to see major climate zones in the United States and how climate differs from weather.",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cfigure id=\"attachment_112575\" class=\"wp-caption alignleft\" style=\"max-width: 560px\">\u003cimg class=\"size-full wp-image-112575\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2014/12/koppenzones.jpg\" alt=\"Map of the major climate zones in the United States\" width=\"560\" height=\"358\" srcset=\"https://ww2.kqed.org/app/uploads/sites/39/2014/12/koppenzones.jpg 560w, https://ww2.kqed.org/app/uploads/sites/39/2014/12/koppenzones-400x256.jpg 400w\" sizes=\"(max-width: 560px) 100vw, 560px\">\u003cfigcaption class=\"wp-caption-text\">Map of the major climate zones in the United States. A: tropical climates, B: dry climates, C: moist subtropical mid-latitude climates, D: moist continental mid-latitude climates, H: highlands \u003ccite>(Courtesy of NOAA)\u003c/cite>\u003c/figcaption>\u003c/figure>\n\u003cp>\u003cem>Check out this \u003ca href=\"https://www.weather.gov/jetstream/climates\">resource\u003c/a> from NOAA to learn about the major climate zones in the continental United States.\u003c/em>\u003c/p>\n\u003cp>There's a lot of talk about climate change in the news, but it's a topic that can be really hard to understand. What exactly is climate change? Put simply, climate change is a change in average weather patterns over a long period of time. However, people often confuse natural variations in weather with climate change. In order to understand the distinction, you have to understand the difference between weather and climate. Weather refers to atmospheric conditions like temperature, precipitation, and wind at a specific time and place, whereas climate refers to long-term trends of weather.\u003c/p>\n\u003cp>Look outside. Is it sunny? Is it raining? Is it snowing? Is it windy? Whatever is happening right now is weather. Weather varies from day to day. Some days it might be sunny, other days in might be cloudy and rainy.\u003c/p>\n\u003cp>A region’s climate is determined by weather patterns -- patterns in precipitation, temperature, humidity and wind -- usually averaged over a 30-year span. Climate gives us an idea of what the weather in a particular region might be. For example, if it’s winter in Miami, you don’t expect it to snow. That’s because Miami has a tropical climate with warm temperatures year-round and lots of rain. Likewise, if it's winter in Maine, you don't expect it to be 95 degrees Fahrenheit.\u003c/p>\n\u003cp>To determine changes in climate, you have to look at long-term trends and averages of past weather data. For example, past weather data from California's Central Valley shows that this area is experiencing warmer temperatures and less fog compared to what would be normal variations in weather. This suggests a changing climate.\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>Climate change is happening now and is already impacting the planet. With climate change, we are seeing shifts in regional climate. For example, spring temperatures in the Midwest arrive about two weeks earlier compared to the 1950s. Parts of the Northeast are experiencing an increase in heavy rain and snow events, and parts of the Southeast are having more days with temperatures above 95 degrees. These are all examples of changes to regional climates.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>What does the term \"weather\" mean?\u003c/li>\n\u003cli>What is climate?\u003c/li>\n\u003cli>What does the term \"climate change\" mean?\u003c/li>\n\u003cli>Describe the climate where you live.\u003c/li>\n\u003c/ul>\n\u003cp>This post is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>This explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\n\u003c/div>\u003c/p>",
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"content": "\u003cp>Scientists around the globe have noticed that over the last 40 years Earth, as a whole, has been warming. This phenomenon, known as global warming, is affecting regional climates differently. For example, some regions may experience warmer summers, while other regions may see winters with heavier snowstorms.\u003c/p>\n\u003cp>A rise in Earth's average temperature isn't always immediately apparent. For example, some places still get snowy winters which might appear to contradict the idea of global warming. (Check out \u003ca href=\"http://www.buzzfeed.com/kevintang/an-illustrated-guide-to-why-this-winter-has-been-so-brutal\">Andy Warner's comic\u003c/a> to learn how global warming can actually lead to heavier snowfall). So, how do scientists know Earth is warming?\u003c/p>\n\u003cp>Scientists don't just look at one set of data; in fact, they analyze a whole body of evidence. One of the clearest indicators of a warming world is change in the Arctic. There, slight increases in temperatures can be the difference between ice and liquid water. Increasing temperatures are leading to declines in glaciers and sea ice. Other indicators of a warming world include rising sea levels and increases in ocean heat.\u003c/p>\n\u003cp>\u003ca href=\"http://https://youtu.be/5siikA1ghmo\">http://https://youtu.be/5siikA1ghmo\u003c/a>\u003c/p>\n\u003cp>\u003cspan style=\"color: #444444\">\u003cbr>\n\u003cem>Watch the video above (and pause to read) to learn more about the evidence that supports global warming.\u003c/em>\u003c/span>\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>How do rising sea levels indicate a warming world?\u003c/li>\n\u003cli>How do shrinking glaciers and declines in sea ice indicate a warming world?\u003c/li>\n\u003cli>How does an increase in ocean heat content indicate a warming world?\u003c/li>\n\u003cli>What does the temperature data graph in this interactive show?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003cstrong>An interactive version of this explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>[ad fullwidth]\u003c/p>\u003cp>\u003c/p>\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>Scientists around the globe have noticed that over the last 40 years Earth, as a whole, has been warming. This phenomenon, known as global warming, is affecting regional climates differently. For example, some regions may experience warmer summers, while other regions may see winters with heavier snowstorms.\u003c/p>\n\u003cp>A rise in Earth's average temperature isn't always immediately apparent. For example, some places still get snowy winters which might appear to contradict the idea of global warming. (Check out \u003ca href=\"http://www.buzzfeed.com/kevintang/an-illustrated-guide-to-why-this-winter-has-been-so-brutal\">Andy Warner's comic\u003c/a> to learn how global warming can actually lead to heavier snowfall). So, how do scientists know Earth is warming?\u003c/p>\n\u003cp>Scientists don't just look at one set of data; in fact, they analyze a whole body of evidence. One of the clearest indicators of a warming world is change in the Arctic. There, slight increases in temperatures can be the difference between ice and liquid water. Increasing temperatures are leading to declines in glaciers and sea ice. Other indicators of a warming world include rising sea levels and increases in ocean heat.\u003c/p>\n\u003cp>\u003ca href=\"http://https://youtu.be/5siikA1ghmo\">http://https://youtu.be/5siikA1ghmo\u003c/a>\u003c/p>\n\u003cp>\u003cspan style=\"color: #444444\">\u003cbr>\n\u003cem>Watch the video above (and pause to read) to learn more about the evidence that supports global warming.\u003c/em>\u003c/span>\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>How do rising sea levels indicate a warming world?\u003c/li>\n\u003cli>How do shrinking glaciers and declines in sea ice indicate a warming world?\u003c/li>\n\u003cli>How does an increase in ocean heat content indicate a warming world?\u003c/li>\n\u003cli>What does the temperature data graph in this interactive show?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003cstrong>An interactive version of this explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>\u003c/p>\u003c/div>",
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"disqusTitle": "What Are Greenhouse Gases and Where Do They Come From?",
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"content": "\u003cp>Climate change is primarily caused by the accumulation of greenhouse gases, or heat-trapping gases, in the atmosphere. Greenhouse gases are certain molecules in the air that have the ability to trap heat in the Earth's atmosphere. Some greenhouse gases, like carbon dioxide (CO\u003csub>2\u003c/sub>) and methane (CH\u003csub>4\u003c/sub>), occur naturally and play an important role in Earth's climate. If they didn't exist, the planet would be a much colder place. However, some human activities, such as mining and burning fossil fuels (like coal, oil and natural gas) for energy and transportation, emit molecules of CO\u003csub>2\u003c/sub> and other greenhouse gases. These activities cause greenhouse gases to accumulate in the air, and as these molecules build up in the atmosphere they cause an overall warming of the planet. Some greenhouse gases are entirely man-made and are products of certain industrial processes.\u003c/p>\n\u003cp>\u003ciframe title=\"Sources of Greenhouse Gases\" width=\"640\" height=\"480\" src=\"https://www.youtube.com/embed/qxWNbHHcPRQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen>\u003c/iframe>\u003c/p>\n\u003cp>\u003cspan style=\"color: #444444\">\u003cem>Play the video to see sources of the main greenhouse gases.\u003c/em>\u003c/span>\u003c/p>\n\u003cp>Not all greenhouse gases are created equal in terms of contributing to climate change. Their impact varies according to how long they remain in the atmosphere and how efficient they are at trapping heat. For example, methane, the main component in natural gas, remains in the atmosphere for a shorter time than CO\u003csub>2\u003c/sub>, but is far more efficient at trapping heat, making it a more potent greenhouse gas. Nitrous oxide is less abundant than methane, but even more efficient at trapping heat, and it stays in the atmosphere for a long time. Understanding the impacts and sources of the main greenhouse gases can help inform strategies to reduce greenhouse gas emissions.\u003c/p>\n\u003cp>For more information, check out the \u003ca href=\"http://www.epa.gov/climatechange/ghgemissions/\">EPA's resources on greenhouse gases.\u003c/a>\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>What does the term \"greenhouse gas\" mean?\u003c/li>\n\u003cli>What role do greenhouse gases play in climate change?\u003c/li>\n\u003cli>What is the most prevalent greenhouse gas?\u003c/li>\n\u003cli>What are some of the major sources of greenhouse gases?\u003c/li>\n\u003cli>Which greenhouse gases do you think are of greatest concern in terms of global warming? Why?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003cstrong>This video explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>[ad fullwidth]\u003c/p>\u003cp>\u003c/p>\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>Climate change is primarily caused by the accumulation of greenhouse gases, or heat-trapping gases, in the atmosphere. Greenhouse gases are certain molecules in the air that have the ability to trap heat in the Earth's atmosphere. Some greenhouse gases, like carbon dioxide (CO\u003csub>2\u003c/sub>) and methane (CH\u003csub>4\u003c/sub>), occur naturally and play an important role in Earth's climate. If they didn't exist, the planet would be a much colder place. However, some human activities, such as mining and burning fossil fuels (like coal, oil and natural gas) for energy and transportation, emit molecules of CO\u003csub>2\u003c/sub> and other greenhouse gases. These activities cause greenhouse gases to accumulate in the air, and as these molecules build up in the atmosphere they cause an overall warming of the planet. Some greenhouse gases are entirely man-made and are products of certain industrial processes.\u003c/p>\n\u003cp>\u003ciframe title=\"Sources of Greenhouse Gases\" width=\"640\" height=\"480\" src=\"https://www.youtube.com/embed/qxWNbHHcPRQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen>\u003c/iframe>\u003c/p>\n\u003cp>\u003cspan style=\"color: #444444\">\u003cem>Play the video to see sources of the main greenhouse gases.\u003c/em>\u003c/span>\u003c/p>\n\u003cp>Not all greenhouse gases are created equal in terms of contributing to climate change. Their impact varies according to how long they remain in the atmosphere and how efficient they are at trapping heat. For example, methane, the main component in natural gas, remains in the atmosphere for a shorter time than CO\u003csub>2\u003c/sub>, but is far more efficient at trapping heat, making it a more potent greenhouse gas. Nitrous oxide is less abundant than methane, but even more efficient at trapping heat, and it stays in the atmosphere for a long time. Understanding the impacts and sources of the main greenhouse gases can help inform strategies to reduce greenhouse gas emissions.\u003c/p>\n\u003cp>For more information, check out the \u003ca href=\"http://www.epa.gov/climatechange/ghgemissions/\">EPA's resources on greenhouse gases.\u003c/a>\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>What does the term \"greenhouse gas\" mean?\u003c/li>\n\u003cli>What role do greenhouse gases play in climate change?\u003c/li>\n\u003cli>What is the most prevalent greenhouse gas?\u003c/li>\n\u003cli>What are some of the major sources of greenhouse gases?\u003c/li>\n\u003cli>Which greenhouse gases do you think are of greatest concern in terms of global warming? Why?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003cstrong>This video explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>\u003c/p>\u003c/div>",
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"disqusTitle": "The Keeling Curve Explained",
"title": "The Keeling Curve Explained",
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"content": "\u003cp>The Keeling Curve is one of the most compelling pieces of scientific evidence that shows that carbon dioxide (CO\u003csub>2\u003c/sub>) is accumulating in our atmosphere. CO\u003csub>2\u003c/sub> is a greenhouse gas. Greenhouse gases trap heat in the atmosphere and help keep the planet warm. More greenhouse gas molecules in the air means more heat is trapped, leading to an overall warming of the planet.\u003c/p>\n\u003cp>\u003ciframe title=\"The Keeling Curve Explained\" width=\"640\" height=\"480\" src=\"https://www.youtube.com/embed/H5gwH9r7FjQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen>\u003c/iframe>\u003c/p>\n\u003cp>\u003cem>Read the explanations in the video above to learn more about the Keeling Curve, which plots CO\u003csub>2 \u003c/sub>in the Earth’s atmosphere over time.\u003c/em>\u003c/p>\n\u003cp>CO\u003csub>2 \u003c/sub>is a molecule made up of one carbon atom and two oxygen atoms, and it moves in and out of the atmosphere through various process known as the carbon cycle. In the carbon cycle, natural processes like human respiration and volcanic activity release CO\u003csub>2\u003c/sub>. Plants absorb CO\u003csub>2\u003c/sub> during photosynthesis and the ocean absorbs it when CO\u003csub>2\u003c/sub> from the air mixes with seawater. However, human activities, such as the burning of fossil fuels, like coal, oil and natural gas, also release CO\u003csub>2\u003c/sub> into the atmosphere.\u003c/p>\n\u003cp>Since the start of the Industrial Revolution in the late 1700s, humans have been emitting more and more CO\u003csub>2\u003c/sub>. At the same time, forests all over the world are being cleared for agriculture and development. Deforestation not only leaves fewer plants to absorb the increasing amounts of CO\u003csub>2\u003c/sub>, but also adds CO\u003csub>2\u003c/sub> to the air when trees are burned or left to decay.\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>Until about the mid-20\u003csup>th\u003c/sup> century many scientists thought that the oceans would easily absorb the excess CO\u003csub>2\u003c/sub> emitted from fossil fuel burning, so there wasn't a great concern over the possible effects of increased emissions in the atmosphere. However, there wasn't a lot of data on the actual concentrations of CO\u003csub>2\u003c/sub> in the atmosphere. In 1958, Charles Keeling of the Scripps Institute of Oceanography began measuring CO\u003csub>2\u003c/sub> levels in the air at a weather station in Hawaii and at the South Pole. After a few years, Keeling observed a steady increase in atmospheric CO\u003csub>2\u003c/sub>, an indication that fossil-fuel emissions were building up in the atmosphere. Due to funding cuts, Keeling had to stop measurements at the South Pole, but the weather station in Hawaii continues to measure concentrations of CO\u003csub>2\u003c/sub>. The data from these measurements are plotted on a graph known as the Keeling Curve.\u003c/p>\n\u003cp>Keeling's findings were so profound that they prompted the National Oceanic and Atmospheric Administration (NOAA) to start monitoring CO\u003csub>2\u003c/sub> concentrations in other locations around the world. And, in July 2014, NASA launched the Orbiting Carbon Observatory, a satellite designed to gather the most precise data ever for tracking the carbon cycle on Earth. All of this data indicates that CO\u003csub>2\u003c/sub> is building up in Earth's atmosphere.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>What does the Keeling Curve show about the concentrations of CO\u003csub>2\u003c/sub> in the Earth's atmosphere?\u003c/li>\n\u003cli>Why does the concentration of CO\u003csub>2\u003c/sub> go up and down throughout the year?\u003c/li>\n\u003cli>Why do you think Keeling chose Mauna Loa and Antarctica to measure atmospheric CO\u003csub>2\u003c/sub>?\u003c/li>\n\u003cli>Why does the concentration of CO\u003csub>2\u003c/sub> increase over time?\u003c/li>\n\u003cli>What does an increase in CO\u003csub>2\u003c/sub> levels in the atmosphere mean for global warming?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>An interactive version of this explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books or subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>The Keeling Curve is one of the most compelling pieces of scientific evidence that shows that carbon dioxide (CO\u003csub>2\u003c/sub>) is accumulating in our atmosphere. CO\u003csub>2\u003c/sub> is a greenhouse gas. Greenhouse gases trap heat in the atmosphere and help keep the planet warm. More greenhouse gas molecules in the air means more heat is trapped, leading to an overall warming of the planet.\u003c/p>\n\u003cp>\u003ciframe title=\"The Keeling Curve Explained\" width=\"640\" height=\"480\" src=\"https://www.youtube.com/embed/H5gwH9r7FjQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen>\u003c/iframe>\u003c/p>\n\u003cp>\u003cem>Read the explanations in the video above to learn more about the Keeling Curve, which plots CO\u003csub>2 \u003c/sub>in the Earth’s atmosphere over time.\u003c/em>\u003c/p>\n\u003cp>CO\u003csub>2 \u003c/sub>is a molecule made up of one carbon atom and two oxygen atoms, and it moves in and out of the atmosphere through various process known as the carbon cycle. In the carbon cycle, natural processes like human respiration and volcanic activity release CO\u003csub>2\u003c/sub>. Plants absorb CO\u003csub>2\u003c/sub> during photosynthesis and the ocean absorbs it when CO\u003csub>2\u003c/sub> from the air mixes with seawater. However, human activities, such as the burning of fossil fuels, like coal, oil and natural gas, also release CO\u003csub>2\u003c/sub> into the atmosphere.\u003c/p>\n\u003cp>Since the start of the Industrial Revolution in the late 1700s, humans have been emitting more and more CO\u003csub>2\u003c/sub>. At the same time, forests all over the world are being cleared for agriculture and development. Deforestation not only leaves fewer plants to absorb the increasing amounts of CO\u003csub>2\u003c/sub>, but also adds CO\u003csub>2\u003c/sub> to the air when trees are burned or left to decay.\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>Until about the mid-20\u003csup>th\u003c/sup> century many scientists thought that the oceans would easily absorb the excess CO\u003csub>2\u003c/sub> emitted from fossil fuel burning, so there wasn't a great concern over the possible effects of increased emissions in the atmosphere. However, there wasn't a lot of data on the actual concentrations of CO\u003csub>2\u003c/sub> in the atmosphere. In 1958, Charles Keeling of the Scripps Institute of Oceanography began measuring CO\u003csub>2\u003c/sub> levels in the air at a weather station in Hawaii and at the South Pole. After a few years, Keeling observed a steady increase in atmospheric CO\u003csub>2\u003c/sub>, an indication that fossil-fuel emissions were building up in the atmosphere. Due to funding cuts, Keeling had to stop measurements at the South Pole, but the weather station in Hawaii continues to measure concentrations of CO\u003csub>2\u003c/sub>. The data from these measurements are plotted on a graph known as the Keeling Curve.\u003c/p>\n\u003cp>Keeling's findings were so profound that they prompted the National Oceanic and Atmospheric Administration (NOAA) to start monitoring CO\u003csub>2\u003c/sub> concentrations in other locations around the world. And, in July 2014, NASA launched the Orbiting Carbon Observatory, a satellite designed to gather the most precise data ever for tracking the carbon cycle on Earth. All of this data indicates that CO\u003csub>2\u003c/sub> is building up in Earth's atmosphere.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>What does the Keeling Curve show about the concentrations of CO\u003csub>2\u003c/sub> in the Earth's atmosphere?\u003c/li>\n\u003cli>Why does the concentration of CO\u003csub>2\u003c/sub> go up and down throughout the year?\u003c/li>\n\u003cli>Why do you think Keeling chose Mauna Loa and Antarctica to measure atmospheric CO\u003csub>2\u003c/sub>?\u003c/li>\n\u003cli>Why does the concentration of CO\u003csub>2\u003c/sub> increase over time?\u003c/li>\n\u003cli>What does an increase in CO\u003csub>2\u003c/sub> levels in the atmosphere mean for global warming?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>An interactive version of this explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books or subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\n\u003c/div>\u003c/p>",
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"content": "\u003cp>Climate change is primarily caused by the accumulation of heat-trapping gases in the atmosphere. In the mid-1800s, physicist John Tyndall conducted experiments and found that some molecules present in the atmosphere, such as carbon dioxide (CO\u003csub>2\u003c/sub>), actually trap heat from the sun and help keep the planet warm. Molecules that have the ability to trap heat in the atmosphere are called greenhouse gases.\u003c/p>\n\u003cp>\u003cspan class=\"embed-youtube\" style=\"text-align:center; display: block;\">\u003ciframe class=\"youtube-player\" type=\"text/html\" width=\"640\" height=\"360\" src=\"https://www.youtube.com/embed/EB_S_9BKcmo?version=3&rel=1&fs=1&autohide=2&showsearch=0&showinfo=1&iv_load_policy=1&wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\">\u003c/iframe>\u003c/span>\u003c/p>\n\u003cp>\u003cspan style=\"color: #444444\"> \u003c/span>\u003cbr>\n\u003cem>Click on the video above to explore how greenhouse gases trap heat in the atmosphere.\u003c/em>\u003c/p>\n\u003cp>Major greenhouse gases, like CO\u003csub>2\u003c/sub> and methane (CH\u003csub>4\u003c/sub>), occur naturally and play an important role in Earth's climate. If they didn't exist, Earth would be a much colder planet. However, some human activities like mining and burning fossil fuels (coal, oil and natural gas) for energy and transportation emit molecules of CO\u003csub>2\u003c/sub> and other greenhouse gases into the air. As we burn and mine more fossil fuels, greenhouse gases build up in the atmosphere and cause an overall warming of the planet.\u003c/p>\n\u003cp>Click on the above video to learn how greenhouse gases trap radiation from the sun and warm the planet.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>Where does infrared radiation (IR) come from?\u003c/li>\n\u003cli>What can greenhouse gas molecules do when they encounter infrared radiation (IR)?\u003c/li>\n\u003cli>Describe how greenhouse gas molecules trap heat in the atmosphere.\u003c/li>\n\u003cli>Explain how the accumulation of greenhouse gases in the atmosphere warms the planet.\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003cstrong>This video explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>[ad fullwidth]\u003c/p>\u003cp>\u003c/p>\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>Climate change is primarily caused by the accumulation of heat-trapping gases in the atmosphere. In the mid-1800s, physicist John Tyndall conducted experiments and found that some molecules present in the atmosphere, such as carbon dioxide (CO\u003csub>2\u003c/sub>), actually trap heat from the sun and help keep the planet warm. Molecules that have the ability to trap heat in the atmosphere are called greenhouse gases.\u003c/p>\n\u003cp>\u003cspan class=\"embed-youtube\" style=\"text-align:center; display: block;\">\u003ciframe class=\"youtube-player\" type=\"text/html\" width=\"640\" height=\"360\" src=\"https://www.youtube.com/embed/EB_S_9BKcmo?version=3&rel=1&fs=1&autohide=2&showsearch=0&showinfo=1&iv_load_policy=1&wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\">\u003c/iframe>\u003c/span>\u003c/p>\n\u003cp>\u003cspan style=\"color: #444444\"> \u003c/span>\u003cbr>\n\u003cem>Click on the video above to explore how greenhouse gases trap heat in the atmosphere.\u003c/em>\u003c/p>\n\u003cp>Major greenhouse gases, like CO\u003csub>2\u003c/sub> and methane (CH\u003csub>4\u003c/sub>), occur naturally and play an important role in Earth's climate. If they didn't exist, Earth would be a much colder planet. However, some human activities like mining and burning fossil fuels (coal, oil and natural gas) for energy and transportation emit molecules of CO\u003csub>2\u003c/sub> and other greenhouse gases into the air. As we burn and mine more fossil fuels, greenhouse gases build up in the atmosphere and cause an overall warming of the planet.\u003c/p>\n\u003cp>Click on the above video to learn how greenhouse gases trap radiation from the sun and warm the planet.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>Where does infrared radiation (IR) come from?\u003c/li>\n\u003cli>What can greenhouse gas molecules do when they encounter infrared radiation (IR)?\u003c/li>\n\u003cli>Describe how greenhouse gas molecules trap heat in the atmosphere.\u003c/li>\n\u003cli>Explain how the accumulation of greenhouse gases in the atmosphere warms the planet.\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003cstrong>This video explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cp>Water covers nearly three-quarters of Earth. It is continuously moving above, on and below Earth’s surface, cycling among ice, liquid water and vapor. This cycling of water shapes the climate by delivering rain and snow, and it supports life on Earth. Water and climate are deeply interconnected, and as the climate changes so does the distribution and cycling of Earth’s water.\u003c/p>\n\u003cp> \u003c/p>\n\u003cp>\u003cem>Discover how water and climate affect each other by watching the video in the graphic above.\u003c/em>\u003c/p>\n\u003cp>With climate change, Earth is getting warmer as greenhouse gases build up and trap more heat in the atmosphere. These warmer temperatures cause increased evaporation of water from places like oceans, lakes, streams and soil. This leads to higher levels of water vapor in the atmosphere, which means that precipitation events tend to be heavier. Whether the water falls as rain or snow depends on temperature. Therefore, if winter temperatures remain below freezing in areas like the northeastern United States, the increased moisture in the air could mean heavier snow storms.\u003c/p>\n\u003cp>Increased water vapor in the air can also further increase warming. Water vapor is actually a greenhouse gas, which traps heat in the atmosphere and causes temperatures to rise. But unlike other greenhouse gases that can linger in the atmosphere for years, water vapor usually stays in the air for a few days before falling back to Earth as precipitation.\u003c/p>\n\u003cp>[ad fullwidth]\u003c/p>\n\u003cp>So, as warm temperatures lead to more water vapor in the air, more water vapor in the air leads to warmer temperatures, which creates a positive feedback loop. A positive feedback loop is called “positive” not because it’s a good thing, but rather because the effects of one process enhance the effects of another, which in turn positively reinforce the effects of the original.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>Why is water vapor considered a “greenhouse gas?”\u003c/li>\n\u003cli>How does water vapor differ from other greenhouse gases?\u003c/li>\n\u003cli>Using water vapor as an example, describe what is meant by a “positive feedback loop.”\u003c/li>\n\u003cli>How can heavier snow events be explained in terms of climate change?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>An interactive version of this explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg loading=\"lazy\" decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg loading=\"lazy\" decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg loading=\"lazy\" decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg loading=\"lazy\" decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\n",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003cp>Water covers nearly three-quarters of Earth. It is continuously moving above, on and below Earth’s surface, cycling among ice, liquid water and vapor. This cycling of water shapes the climate by delivering rain and snow, and it supports life on Earth. Water and climate are deeply interconnected, and as the climate changes so does the distribution and cycling of Earth’s water.\u003c/p>\n\u003cp> \u003c/p>\n\u003cp>\u003cem>Discover how water and climate affect each other by watching the video in the graphic above.\u003c/em>\u003c/p>\n\u003cp>With climate change, Earth is getting warmer as greenhouse gases build up and trap more heat in the atmosphere. These warmer temperatures cause increased evaporation of water from places like oceans, lakes, streams and soil. This leads to higher levels of water vapor in the atmosphere, which means that precipitation events tend to be heavier. Whether the water falls as rain or snow depends on temperature. Therefore, if winter temperatures remain below freezing in areas like the northeastern United States, the increased moisture in the air could mean heavier snow storms.\u003c/p>\n\u003cp>Increased water vapor in the air can also further increase warming. Water vapor is actually a greenhouse gas, which traps heat in the atmosphere and causes temperatures to rise. But unlike other greenhouse gases that can linger in the atmosphere for years, water vapor usually stays in the air for a few days before falling back to Earth as precipitation.\u003c/p>\n\u003cp>\u003c/p>\u003c/div>",
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"content": "\u003cdiv class=\"post-body\">\u003cp>\u003c/p>\n\u003cp>So, as warm temperatures lead to more water vapor in the air, more water vapor in the air leads to warmer temperatures, which creates a positive feedback loop. A positive feedback loop is called “positive” not because it’s a good thing, but rather because the effects of one process enhance the effects of another, which in turn positively reinforce the effects of the original.\u003c/p>\n\u003ch2>Discussion Questions\u003c/h2>\n\u003cul>\n\u003cli>Why is water vapor considered a “greenhouse gas?”\u003c/li>\n\u003cli>How does water vapor differ from other greenhouse gases?\u003c/li>\n\u003cli>Using water vapor as an example, describe what is meant by a “positive feedback loop.”\u003c/li>\n\u003cli>How can heavier snow events be explained in terms of climate change?\u003c/li>\n\u003c/ul>\n\u003cp>This video explainer is part of our \u003ca href=\"https://ww2.kqed.org/quest/collections/clue-into-climate/\">Clue into Climate\u003c/a> collection of resources.\u003c/p>\n\u003chr>\n\u003cp>\u003c/p>\n\u003cp>\u003cstrong>An interactive version of this explainer is featured in our \u003cstrong>Clue into Climate\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg loading=\"lazy\" decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg loading=\"lazy\" decoding=\"async\" class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg loading=\"lazy\" decoding=\"async\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of 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"content": "\u003cp>https://www.youtube.com/watch?v=Yc87jmAMTac\u003c/p>\n\u003cp>Jennifer Holm is an Earth system scientist and terrestrial ecologist at \u003ca href=\"http://www.lbl.gov/\">Lawrence Berkeley National Laboratory\u003c/a>. She uses climate models to study how forests are changing as a result of climate change and how that may impact the future climate. She spends a lot of her day analyzing outputs of climate models and simulations, as well as collaborating with other scientists.\u003c/p>\n\u003chr>\n\u003cp>\u003cstrong>This video is featured in our \u003cstrong>\u003ca href=\"http://ww2.kqed.org/quest/collections/clue-into-climate/\" target=\"_blank\">Clue into Climate\u003c/a>\u003c/strong> e-book series. Click on the tabs below to download our free e-books and subscribe to our iTunes U course. You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>[ad fullwidth]\u003c/p>\u003cp>\u003c/p>\n",
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You can also visit our \u003ca href=\"http://blogs.kqed.org/education/e-books/\">e-books page\u003c/a> to view our other offerings.\u003c/strong>\u003c/p>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-11944\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-1-150x194.png\" alt=\"Climate e-book cover 1\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Look into the causes of climate change, and discover how scientists develop and use climate models.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/ee/book/clue-into-climate-causes-change/id927517681?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14724\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-2-150x194.png\" alt=\"Climate e-book cover 2 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Learn about how climate change influences precipitation patterns and how it impacts our frozen landscape.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id930719116?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14735\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-3-150x194.png\" alt=\"Climate e-book cover 3 updated web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>Investigate shifts in the distribution of plant and animal species due to climate change, and the effects of increased carbon dioxide emissions on the ocean.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-changing/id932195900?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\n\u003cp>\u003cimg class=\"alignleft size-full wp-image-14737\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Climate-e-book-cover-4-150x194.png\" alt=\"Climate e-book cover 4 web\" width=\"105\" height=\"136\">\u003c/p>\n\u003cp>See how communities are preparing for sea level rise and other impacts of climate change, and ways we can help minimize future climate change.\u003c/p>\n\u003cp>\u003ca href=\"https://itunes.apple.com/us/book/clue-into-climate-facing-our/id932658240?mt=13\">\u003cimg class=\"wp-image-11945\" src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/Download_on_iTunes_Badge_US-UK_110x40_1004.png\" alt=\"Download on iBooks\" width=\"110\" height=\"40\">\u003c/a> \u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg alt=\"\">\u003c/a>\u003ca href=\"https://itunes.apple.com/us/course/clue-into-climate/id944516910\">\u003cimg src=\"http://ww2.kqed.org/quest/wp-content/uploads/sites/39/2015/12/E-book-button-for-Web.png\" alt=\"Subscribe on iTunes\" width=\"110\" height=\"40\">\u003c/a>\u003c/p>\n\u003c/div>\n\u003cdiv class=\"clearfix\">\u003c/div>\n\u003cp>\u003c/p>\u003c/div>",
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}
},
"baycurious": {
"id": "baycurious",
"title": "Bay Curious",
"tagline": "Exploring the Bay Area, one question at a time",
"info": "KQED’s new podcast, Bay Curious, gets to the bottom of the mysteries — both profound and peculiar — that give the Bay Area its unique identity. And we’ll do it with your help! You ask the questions. You decide what Bay Curious investigates. And you join us on the journey to find the answers.",
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},
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},
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"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2024/04/BBC-World-Service-Podcast-Tile-360x360-1.jpg",
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},
"link": "/radio/program/bbc-world-service",
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"tuneIn": "https://tunein.com/radio/BBC-World-Service-p455581/",
"rss": "https://podcasts.files.bbci.co.uk/p02nq0gn.rss"
}
},
"californiareport": {
"id": "californiareport",
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"tagline": "California, day by day",
"info": "KQED’s statewide radio news program providing daily coverage of issues, trends and public policy decisions.",
"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2024/04/The-California-Report-Podcast-Tile-703x703-1.jpg",
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"officialWebsiteLink": "/californiareport",
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"source": "kqed",
"order": 8
},
"link": "/californiareport",
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},
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"tagline": "Your state, your stories",
"info": "Every week, The California Report Magazine takes you on a road trip for the ears: to visit the places and meet the people who make California unique. The in-depth storytelling podcast from the California Report.",
"airtime": "FRI 4:30pm-5pm, 6:30pm-7pm, 11pm-11:30pm",
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"order": 10
},
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"google": "https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5tZWdhcGhvbmUuZm0vS1FJTkM3NjkwNjk1OTAz",
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},
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"info": "A one-hour radio program to hear celebrated writers, artists and thinkers address contemporary ideas and values, often discussing the creative process. Please note: tapes or transcripts are not available",
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"officialWebsiteLink": "https://www.cityarts.net/",
"airtime": "SUN 1pm-2pm, TUE 10pm, WED 1am",
"meta": {
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"source": "City Arts & Lectures"
},
"link": "https://www.cityarts.net",
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"tuneIn": "https://tunein.com/radio/City-Arts-and-Lectures-p692/",
"rss": "https://www.cityarts.net/feed/"
}
},
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"order": 1
},
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"info": "\u003cem>Code Switch\u003c/em>, which listeners will hear in the first part of the hour, has fearless and much-needed conversations about race. Hosted by journalists of color, the show tackles the subject of race head-on, exploring how it impacts every part of society — from politics and pop culture to history, sports and more.\u003cbr />\u003cbr />\u003cem>Life Kit\u003c/em>, which will be in the second part of the hour, guides you through spaces and feelings no one prepares you for — from finances to mental health, from workplace microaggressions to imposter syndrome, from relationships to parenting. The show features experts with real world experience and shares their knowledge. Because everyone needs a little help being human.\u003cbr />\u003cbr />\u003ca href=\"https://www.npr.org/podcasts/510312/codeswitch\">\u003cem>Code Switch\u003c/em> offical site and podcast\u003c/a>\u003cbr />\u003ca href=\"https://www.npr.org/lifekit\">\u003cem>Life Kit\u003c/em> offical site and podcast\u003c/a>\u003cbr />",
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"meta": {
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"id": "commonwealth-club",
"title": "Commonwealth Club of California Podcast",
"info": "The Commonwealth Club of California is the nation's oldest and largest public affairs forum. As a non-partisan forum, The Club brings to the public airwaves diverse viewpoints on important topics. The Club's weekly radio broadcast - the oldest in the U.S., dating back to 1924 - is carried across the nation on public radio stations and is now podcasting. Our website archive features audio of our recent programs, as well as selected speeches from our long and distinguished history. This podcast feed is usually updated twice a week and is always un-edited.",
"airtime": "THU 10pm, FRI 1am",
"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2024/04/Commonwealth-Club-Podcast-Tile-360x360-1.jpg",
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"meta": {
"site": "news",
"source": "Commonwealth Club of California"
},
"link": "/radio/program/commonwealth-club",
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"google": "https://podcasts.google.com/feed/aHR0cDovL3d3dy5jb21tb253ZWFsdGhjbHViLm9yZy9hdWRpby9wb2RjYXN0L3dlZWtseS54bWw",
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"title": "Forum",
"tagline": "The conversation starts here",
"info": "KQED’s live call-in program discussing local, state, national and international issues, as well as in-depth interviews.",
"airtime": "MON-FRI 9am-11am, 10pm-11pm",
"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2024/04/Forum-Podcast-Tile-703x703-1.jpg",
"imageAlt": "KQED Forum with Mina Kim and Alexis Madrigal",
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"source": "kqed",
"order": 9
},
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"imageSrc": "https://ww2.kqed.org/news/wp-content/uploads/sites/10/2018/05/freakonomicsRadio.png",
"officialWebsiteLink": "http://freakonomics.com/",
"airtime": "SUN 1am-2am, SAT 3pm-4pm",
"meta": {
"site": "radio",
"source": "WNYC"
},
"link": "/radio/program/freakonomics-radio",
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},
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"id": "fresh-air",
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"apple": "https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?s=143441&mt=2&id=214089682&at=11l79Y&ct=nprdirectory",
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"info": "A live production of NPR and WBUR Boston, in collaboration with stations across the country, Here & Now reflects the fluid world of news as it's happening in the middle of the day, with timely, in-depth news, interviews and conversation. Hosted by Robin Young, Jeremy Hobson and Tonya Mosley.",
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"hidden-brain": {
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"info": "Shankar Vedantam uses science and storytelling to reveal the unconscious patterns that drive human behavior, shape our choices and direct our relationships.",
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"airtime": "SUN 7pm-8pm",
"meta": {
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"source": "NPR"
},
"link": "/radio/program/hidden-brain",
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"how-i-built-this": {
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"title": "How I Built This with Guy Raz",
"info": "Guy Raz dives into the stories behind some of the world's best known companies. How I Built This weaves a narrative journey about innovators, entrepreneurs and idealists—and the movements they built.",
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"airtime": "SUN 7:30pm-8pm",
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},
"link": "/radio/program/how-i-built-this",
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"apple": "https://itunes.apple.com/us/podcast/how-i-built-this-with-guy-raz/id1150510297?mt=2",
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"hyphenacion": {
"id": "hyphenacion",
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"tagline": "Where conversation and cultura meet",
"info": "What kind of no sabo word is Hyphenación? For us, it’s about living within a hyphenation. Like being a third-gen Mexican-American from the Texas border now living that Bay Area Chicano life. Like Xorje! Each week we bring together a couple of hyphenated Latinos to talk all about personal life choices: family, careers, relationships, belonging … everything is on the table. ",
"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2025/03/Hyphenacion_FinalAssets_PodcastTile.png",
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"officialWebsiteLink": "/podcasts/hyphenacion",
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"order": 15
},
"link": "/podcasts/hyphenacion",
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},
"jerrybrown": {
"id": "jerrybrown",
"title": "The Political Mind of Jerry Brown",
"tagline": "Lessons from a lifetime in politics",
"info": "The Political Mind of Jerry Brown brings listeners the wisdom of the former Governor, Mayor, and presidential candidate. Scott Shafer interviewed Brown for more than 40 hours, covering the former governor's life and half-century in the political game – and Brown has some lessons he'd like to share. ",
"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2024/04/The-Political-Mind-of-Jerry-Brown-Podcast-Tile-703x703-1.jpg",
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"officialWebsiteLink": "/podcasts/jerrybrown",
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"order": 18
},
"link": "/podcasts/jerrybrown",
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}
},
"latino-usa": {
"id": "latino-usa",
"title": "Latino USA",
"airtime": "MON 1am-2am, SUN 6pm-7pm",
"info": "Latino USA, the radio journal of news and culture, is the only national, English-language radio program produced from a Latino perspective.",
"imageSrc": "https://ww2.kqed.org/radio/wp-content/uploads/sites/50/2018/04/latinoUsa.jpg",
"officialWebsiteLink": "http://latinousa.org/",
"meta": {
"site": "news",
"source": "npr"
},
"link": "/radio/program/latino-usa",
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"apple": "https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?s=143441&mt=2&id=79681317&at=11l79Y&ct=nprdirectory",
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"rss": "https://feeds.npr.org/510016/podcast.xml"
}
},
"marketplace": {
"id": "marketplace",
"title": "Marketplace",
"info": "Our flagship program, helmed by Kai Ryssdal, examines what the day in money delivered, through stories, conversations, newsworthy numbers and more. Updated Monday through Friday at about 3:30 p.m. PT.",
"airtime": "MON-FRI 4pm-4:30pm, MON-WED 6:30pm-7pm",
"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2024/04/Marketplace-Podcast-Tile-360x360-1.jpg",
"officialWebsiteLink": "https://www.marketplace.org/",
"meta": {
"site": "news",
"source": "American Public Media"
},
"link": "/radio/program/marketplace",
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"rss": "https://feeds.publicradio.org/public_feeds/marketplace-pm/rss/rss"
}
},
"masters-of-scale": {
"id": "masters-of-scale",
"title": "Masters of Scale",
"info": "Masters of Scale is an original podcast in which LinkedIn co-founder and Greylock Partner Reid Hoffman sets out to describe and prove theories that explain how great entrepreneurs take their companies from zero to a gazillion in ingenious fashion.",
"airtime": "Every other Wednesday June 12 through October 16 at 8pm (repeats Thursdays at 2am)",
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"officialWebsiteLink": "https://mastersofscale.com/",
"meta": {
"site": "radio",
"source": "WaitWhat"
},
"link": "/radio/program/masters-of-scale",
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"apple": "http://mastersofscale.app.link/",
"rss": "https://rss.art19.com/masters-of-scale"
}
},
"mindshift": {
"id": "mindshift",
"title": "MindShift",
"tagline": "A podcast about the future of learning and how we raise our kids",
"info": "The MindShift podcast explores the innovations in education that are shaping how kids learn. Hosts Ki Sung and Katrina Schwartz introduce listeners to educators, researchers, parents and students who are developing effective ways to improve how kids learn. We cover topics like how fed-up administrators are developing surprising tactics to deal with classroom disruptions; how listening to podcasts are helping kids develop reading skills; the consequences of overparenting; and why interdisciplinary learning can engage students on all ends of the traditional achievement spectrum. This podcast is part of the MindShift education site, a division of KQED News. KQED is an NPR/PBS member station based in San Francisco. You can also visit the MindShift website for episodes and supplemental blog posts or tweet us \u003ca href=\"https://twitter.com/MindShiftKQED\">@MindShiftKQED\u003c/a> or visit us at \u003ca href=\"/mindshift\">MindShift.KQED.org\u003c/a>",
"imageSrc": "https://cdn.kqed.org/wp-content/uploads/2024/04/Mindshift-Podcast-Tile-703x703-1.jpg",
"imageAlt": "KQED MindShift: How We Will Learn",
"officialWebsiteLink": "/mindshift/",
"meta": {
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"source": "kqed",
"order": 12
},
"link": "/podcasts/mindshift",
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"google": "https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5tZWdhcGhvbmUuZm0vS1FJTkM1NzY0NjAwNDI5",
"npr": "https://www.npr.org/podcasts/464615685/mind-shift-podcast",
"stitcher": "https://www.stitcher.com/podcast/kqed/stories-teachers-share",
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}
},
"morning-edition": {
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