Home

The Megalodon's Descendants

 

Cat by Cat  June 24th, 2009
37.769700, -122.466000

Artist's depiction of a megalodon chasing two blue whales (image credit: Karen Carr, the Virginia Museum of Natural History)
Often I am drawn back to one place at the California Academy of Sciences, staring down at the dancing forms in the Lagoon's shallow water. Rays and sharks glide easily just above the tropical sand. Eventually, I see the lagoon’s shyer inhabitant, the guitarfish, whose body markings and shape resemble an upside down guitar. Sharks, ray, and guitarfish all belong to the subclass Elasmobranchii within the cartilaginous fish class Chondrichthyes. The Elasmobranchii also includes the infamous megalodon, thought to be the largest carnivorous fish ever to have existed. The megalodon was famed to reach lengths between 45 and 90 feet, dwarfing even today's most fearsome Great Whites.

What I find most interesting about this subclass is the body make-up these creatures share. They do not have a bony skeleton like humans; their skeleton is made up of cartilage—a dense connective tissue that is tough yet elastic. Their grace, speed, and great success as predators come from the fluidity of their movement.

This also makes it difficult for Ichthyologists to agree on taxonomy within this class as fossilized remains of cartilaginous fish are often poor. The oldest fossil on record of a megalodon, 18 million years old, is the only bone in the skeleton: a tooth. From the tooth, several researchers have tried to reconstruct the jaw and piece together what the body would look like. The tooth also suggests what this massive prehistoric shark preyed upon: There are bite marks on whales, dolphins, porpoises and sea turtles.

As the sharks, rays, and guitarfish pass by in the lagoon, I imagine the shadow of their giant cousin, the megalodon.

Calling all Psocoptera! Science Book Clubs in the Bay Area

 

Kishore Hari by Kishore Hari  May 22nd, 2009
37.7697, -122.466

I admit it, I watch way too much television. Some good television (KQED QUEST for example), but mainly bad television: American Idol, Amazing Race, pretty much anything on the VH1 channel. My brain was turning to mush.

After some cajoling from the wife, I trekked down to the library to check out the science section. I was amazed at the bevy of great pop science books. Most are accessible, quick reads on pretty much every science topic under the sun. However, I'm a social creature, I wanted to discuss science books with peers.

A few quick searches and voila! Science book clubs exist right here in the Bay Area (one of them hosted by myself so I'd have more control on book selection). Lively discussion and science books, it's a good combination.

Down to a Science Book Club

Book: "How We Decide" by Jonah Lehrer

When: Monday, May 25th, 7-9 PM

Where: Books Inc, 601 Van Ness @ Turk, 2 blocks north of SF City Hall

Details: Ever had a experience of option paralysis? Like when you are looking at the 11 different types of Cheerios in the cereal aisle? If you're anything like me, decision making is an "interesting" process. Jonah Lehrer tackles the neurobiology of decision making and points out a few ways you may be able to overcome that paralysis. Watch Jonah discuss decision making at the Commonwealth Club or listen to him discuss Choice on RadioLab.

California Academy of Science Book Clubs

Teens Talk Books: Underwater Explorations

Book: Shark Life: True Stories about Sharks and the Sea by Peter Benchley

When: June 6th, 11:00 am in Education Classroom

Where: California Academy of Sciences

Coming face to face with the jaws of a great white shark.  Chasing leaping orcas near Vancouver.  Swimming with hoards of hammerheads in the Sea of Cortez.  Benchley, the author of Jaws, shares his many underwater adventures with sharks and other marine creatures, while helping the reader learn more about these majestic creatures, how to swim with them safely, and why it is vital for us to protect our oceasn.  Join us for a discussion of Benchley's fascinating read!

Reservations: Free with admission to the museum, but participants should call the Naturalist Center at 415-379-5494 to reserve a space.

Bookworms (Adult Book Group): Why Do Oceans Matter?

Book: Sea Change: A Message of the Oceans by Sylvia Earle

When: June 16th, 6:30 pm in the Naturalist Center

Where: California Academy of Sciences

Details: In recognition of World Ocean Day this month, the group will read and discuss noted marine biologist Sylvia Earle's book which is both a plea for ocean conservation and a very personal story of her own lifelong exploration of life in the deep.

Reservations: Free.  Reserve a space by calling 415-379-5494.

This Week In Science Online Book Club – Hosted by TWIS.org

An Ocean of Air: Why the Wind Blows and Other Mysteries of the Atmosphere

Details: Most of the time we hardly notice that we're moving through air. But when a storm system whips it into a whirling mass that grows into a tornado or a hurricane, then the air around us makes headlines. Science consultant Walker (Snowball Earth) presents a lively history of scientists' and adventurers' exploration of this important and complex contributor to life on Earth, from Galileo's early attempts to show that it has weight to the explorations by 20th-century scientists Oliver Heaviside and Edward Appleton of the ionosphere, which acts as a giant mirror bouncing radio waves from one side of the globe to another. Walker provides readers with easy-to-follow discussions of the science behind the discovery that carbon dioxide levels are rising exponentially.

Producer's Notes: Seahorse Sleuths

 

Joan Johnson by Joan Johnson  May 19th, 2009
37.796944, -122.406852

babySeahorses are sold as expensive ingredients used in
traditional Chinese medicine.

When I was a kid I rode horses and was an avid ocean swimmer, and I absolutely fell in love with all sea creatures. But there was a special place in my heart for the one that seemingly combined my land and sea passions, the seahorse. Come to think of it, I don't think I actually thought these undersea chimeras existed in real life…in my mind they lived in storybook land along with unicorns and Mr. Tumnus. I mean, I never saw a real one…so how could I know? But these days kids are getting familiar with the real deal thanks to the hard work of a handful of public aquariums, like the Monterey Bay Aquarium, The Steinhart Aquarium, The National Aquarium in Baltimore, The Shedd Aquarium, and The Birch Aquarium among others.

Not surprisingly, I jumped at the chance to produce the Quest "Seahorse Sleuth" story, but I will admit that the process of making this piece was demoralizing, to say the least. I spent days in San Francisco’s Chinatown trying to get shop owners who sell Traditional Chinese Medicine (TCM) to talk to me about their trade, and specifically about seahorses. I must have visited 20 or so stores, multiple times, and I saw many hundreds of dried seahorses and thousands of shark fins, not to mention enormous piles of antlers, skins, penises, and whole dried animals. Though I tried many different approaches, no one would talk to me…I was clearly an outsider and not to be trusted. (Had I managed to garner the trust of one of the shop owners, I would have certainly included them in the piece). This experience made me even more impressed and appreciative of the hard work that the folks at Project Seahorse are doing, and exhausted at the thought of how far they still have to go to convince fisherman and governments around the world not to decimate their seahorse populations.

But whereas Project Seahorse must be measured and careful in their approach to these conversations about TCM in order to make headway, I feel that in this blog I can be more forthcoming about my feelings about the use of these animals, and all animals, in TCM.

Of course TCM has a rich history dating back at least 2,000 years, and at least a quarter of the world's population uses this form of medicine. I myself find acupuncture and herbal remedies to be very helpful and do not wish to debunk the efficacy of at least those two parts of the tradition. But I personally draw the line at the use of animals, because I'm a huge animal lover, and I am absolutely appalled at the use of endangered or threatened species for any use. This planet may have seemed endlessly bountiful 2000 years ago, but today we can no longer afford to take the survival of non-human species for granted. To add salt to the wound, it is my understanding that China does not, as of yet, perform the kind of rigorous testing of these products that we must perform for drugs in the U.S. to determine their effectiveness. (This is why we get products from China with arsenic in them, for example). One of the main uses of dried seahorses (and many other dried animals) in TCM is for male virility, though I do not believe there have been any studies that actually prove it has any effect on virility. I don’t know about you, but I think it’s dumbfounding that a country with an official one-child policy, which has led to female infanticide levels that have caused a significant gender imbalance in China, thinks they need to ingest threatened and endangered species to improve the potency of their male population. Let's put the pieces together here folks.

Ok, I'm going to get off my soapbox now, since I'm getting into territory that I am certainly not an expert in. But I did want to present this topic for open discussion – since that's what blogs are for. But before you get too riled up, let me suggest a few websites for further research.

First of all, learn what you can do to help save seahorses by signing on to the Monterey Bay Aquarium's Seahorse Conservation Page. You can also brush up on the specific uses of Endangered Animals in Traditional Chinese Medicine with this informative paper on Encyclopedia's “Advocacy for Animals” site.

TRAFFIC (The Wildlife Trade Monitoring Network) has a new Chinese-language textbook aimed at raising awareness on how to best protect threatened species used in TCM. Lastly, check out The World Wildlife Fund’s FAQ page on Traditional Chinese Medicine.

And that’s just to get you started…the web has plenty of information on this topic…read it and tell your friends!


Watch the Seahorse Sleuths television story online.


Science In Action

 

Cat by Cat  November 12th, 2008
37.7697, -122.466

One of the questions that was asked before beginning work on the new California Academy of Sciences was what should a natural history museum in the 21st century look like? The architect Renzo Piano felt that it was stripping away halls and letting light and transparency foster community and growth. The exhibit designers believed it was breaking down the linear stories and creating a space for people to formulate their own story through vignettes of content. Ryan Wyatt, director of the Planetarium and Science Visualization believed that the museum should not just be within the walls but rather mesh and evolve through multi-media.

Science in Action is metamorphosis of creating a "un-museum" through multi-media as well as a tie with the Academy's past. Our in-house news program filmed at the Academy was branded the same name. Today, Science in Action exists on the floor as a breaking news exhibit. The exhibit contains four screens that scroll through four breaking stories about science. One story is changed out every week, thus all stories revolve out within a month's time. Science in Action will not end there. The production team is working on the next phase of uploading content on the Internet along with surveys and special clips to facilitate interaction. Once a month, evening programming beginning in mid winter will use content in Science in Action for programming. The experts will be here in person to go more in depth. The stories are not just for the screen but spread out through the museum as well as through community partners and experts.

I was asked recently to join the content team for Science in Action to get a real feel for the production side in order to better deliver programs for the evening events. The production team consists of staff from research, the aquarium, production, public programs and education. We meet once a week to brainstorm and once a story is chosen the production team works in collaboration with the content team to make an idea into a news story with a week turn-around. Last week, we did a piece on the Cosco-Busan oil spill for its year anniversary. I was able to help edit the script through the mock up, rough-cut, interviews, and final visual edit. A colleague and I drafted a summary and survey of the piece to be used in connection. It was a great team effort. This team effort will take place every week to turn out more than 60 stories per year. It is also an evolving process with equal input from the content and production team and will generate not only content for the floor, but for the web, partners, iTunes, and public programs.

It is projects like this that make me love where I work, as I am challenged to be informed and enmeshed in all the amazing discoveries in technology and science. Natural museums in this day and age must be cognizant that information is available everywhere. Museums that strive to be current have to embrace the information age and be comfortable updating content on a more regular basis as well as interacting with their virtual audience. Exhibits and multi-media were designed for the Academy with this in mind and will change accordingly. Like research expanding with new discoveries, our public floor will change in pace with science.

A Wonderful Find in the Pelt Room

 

Cat by Cat  October 31st, 2008
37.7697, -122.466

Snow leopardRecently I had to return several bird specimens to the Ornithology and Mammalogy department at the Academy. This project afforded me an opportunity to go into the pelt and bird room. The room, essentially a large refrigerator, was a brisk 58 degrees and packed with all sorts of wonderful specimens. Birds of all kinds stood picturesque on shelves while pelts of lions, tigers, bears among other mammals lined the walls several feet deep.

Specimens were sorted into taxonomical groups with relation to each other. Some specimens were a century old if not older, including an elephant skin shot in Africa by President Teddy Roosevelt in 1908. As mammals are my greatest love in natural history, I was in awe of the great variety of specimens. One specimen in particular took my breath away. Buried below the pelts of tigers with their massive paws was the smaller and more elusive Uncia uncia better known as the Snow Leopard. The first thing that struck me about the pelt was the length of the tail. For balance on the slippery climes of mountainous central and South Asia, snow leopards use incredibly long tails for balancing while stalking their prey of mountain goats, wild sheep, and small mammals. They will traverse up and down perilous cliffs in pursuit of prey and do so with an extraordinary balance. Watching Planet Earth recently, I was enthralled watching live footage of an actual hunt on a cliff. The speed and agility of these animals is incredible.

It was studying the Snow Leopard that made me fall in love with the big cat family and set me on a course to learn about conservation. I had to give a report in fifth grade about the cat and I still can remember drawing the body out on the board to show that the tail was usually the same length as the cat's body. I was so nervous during the talk that my lips trembled giving me a horrible stutter through out. Yet, that was the first time I became really passionate about an animal and ultimately conservation. I remember thinking "This leopard could become extinct in my lifetime…"

This is still a very likely scenario, although they are now on the "Red List" of endangered species. There are only about 7,500 Snow Leopards in the wild and fewer than 700 in zoos around the world. This animal is a perfect example of an animal's needs and habitat battling against the needs of a local people and economy. Protection of the Snow Leopard includes research and tracking. It also includes education and empowering the villagers that share a habitat with them to protect them as well. Poaching of Snow Leopards has been one of the main causes for their demise. Historically they have been hunted for their thick fur and killed as a pest because in lean years they kill the goats and sheep of local villages. Conservation groups like the Snow Leopard Trust understand that conservation is not only about research but creating economical and educational opportunities for local people who live with these animals. I am hoping conservation endeavors will continue to protect animals living in the wild. It would be a shame if in my lifetime Snow Leopards were only noted as pelts hanging in museums like the Academy.

The Building is Platinum

 

Cat by Cat  October 15th, 2008
37.7697, -122.466

The California Academy of SciencesThe California Academy of Sciences is officially the greenest museum on the planet. LEED, which stands for Leadership in Environmental Engineering and Design, is under the umbrella of the U.S. Green Building Council. It is the benchmark for certification and ranking of green buildings throughout the United States and the world. LEED gave the Academy the highest rating of Platinum for a green building on October 7, 2008. Fifty-two points are needed to for a Platinum rating and the Academy received fifty-four points.

Before starting construction, the Academy was committed to creating a Platinum building to exemplify and embody the Academy mission to explore, explain and protect the natural world. Thirty-four of the fifty-four points were received for the construction of the building. The remaining twenty points were awarded a year after the building was built to ensure that all systems worked effectively. LEED awards its point in the following categories: sustainable sites, water efficiency, energy and atmosphere, materials and resources, indoor environmental quality and innovation and design process. The examples below touch upon the many ways the Academy took on the commitment to a green building and sustainability:

• The new Academy was integrated into the natural environment of Golden Gate Park. The vision of Renzo Piano, the architect of the building, was to lift an acre of the park up and put a museum underneath. His use of light and transparency further reinforces the integration with the park.

• By absorbing rainwater, the new Academy's living roof prevents up to 3.6 million gallons of runoff from carrying pollutants into the ecosystem each year (about 98% of all storm water).

• Over 90% of the demolition waste from the old Academy was recycled. 9,000 tons of concrete were reused in Richmond roadway construction, 12,000 tons of steel were recycled and went to Schnitzer Steel, and 120 tons of green waste were recycled on site. Most of the materials used to build the new building were also sustainable. All the steel in the building was recycled and the insulation within the walls was made from recycled blue jeans.

• Radiant floor heating reduces energy needs by 5-10%. Heat recovery systems also captures and utilizes heat produced by HVAC equipment, reducing heating energy use.

• At least 90% of regularly occupied spaces has access to daylight and outside views, reducing energy use and heat gain from electric lighting.

• Rather than hiding the green aspects of the building, they are in plain sight. Such examples include the living roof, use of remarkably clear glass, skylights, concrete with recycled bio-ash and a motorized ventilation system. The green building is an exhibit in itself.

Insider's View: Cal Academy Opening Day

 

Cat by Cat  October 1st, 2008
37.7697, -122.466

Ball Python (Python regius)The majority of staff were "all hands on deck" this past Saturday and Sunday at the California Academy of Sciences. Yet, we were vastly outnumbered. Fifteen thousand people perused the new building while thousands more enjoyed the festivities in the park.

Two of us, with animal handling experience, were rotating handling of a a four foot Ball Python and a six and half foot Red tailed Boa Constrictor to give guests a chance to get up close and personal with nature.

However, not everyone loves snakes. I had stickers in my pocket for those kids who were too shy or scared to come and see the snake I had in my hands. But the majority of kids would approach unabashed and when I was on the floor with the Ball Python, I was often surrounded by "shorter" guests. As I was going through the Piazza, I was approached by a woman, her daughter, and with trepidation her husband. They were visiting from England and the woman and her daughter were enjoying petting the snake and were asking questions about it. The woman asked her husband to join in and I looked up to see the fear palatable on his face.

My mom, who was bitten as a child has a large fear of snakes, so I could read the fear easily on the man's face. I asked him about it and he said one of the reasons he loved England was its lack of snakes. Talking to him, I explained my mom's fear and why the snake I was holding was a great snake for him to pet if he would like to. At full growth, the Ball Python only reaches four feet. The Ball Python gets its name for hiding it head into the ball of its body when threatened, so a chance of being bitten by a Ball Python that is used to being handled is slight. This particular snake, was incredibly docile and had been handled for over ten years. He approached visibly shaking to pet the snake's body. Tears were rolling down his face, it was apparent that he was facing a life long fear. His daughter and wife were beaming at the exchange. It felt wonderful allowing someone to face a fear in such a safe and positive way.

Stories of moments have been shared amongst staff since opening weekend. All of these stories relate small moments exchanged between staff and guests. Some are funny, some touching. This is just my own story. The majority of Academy staff volunteered to work a ten- to fifteen-hour day each day in order to be part of the opening weekend. Staff coped with long days, tired feet, and answers repeated over a hundred times with a smile. They continue to replay opening with stories like this with each other. It is great to be open and I am looking forward to many more stories and shared moments.

The Cal Acad's Master List

 

Cat by Cat  September 5th, 2008
37.7697, -122.466

Galapagos TortoiseOpening is less than a month away, 24 days to be exact – energy (and endurance!) is at an all time high. It is not uncommon to see people working all hours of the day and night. It is becoming a joke amongst staff that 90% of their job description falls under other duties as assigned.

This has always been an inside joke for me as project management has ranged from animal handling to chocolate tastings during my four year tenure here. My position title finally caught up with my nebulous role – Manager, Special Programming. So when I was asked to help out with exhibits, I was up to the challenge. Little did I know what I was getting myself into!

Right now, exhibits is installing over two hundred specimens into the exhibit cases on the public floor. There is one master list that denotes common name, species name, acquisition source, contact information, dimensions, and status. I was put in charge of updating and organizing that list. This gives the exhibit team more time to clean, catalogue, measure and mount the many specimens before opening day. Specimen mounting is taking place just behind the timeline of exhibit installation. The East Pavilion of exhibit cabinets are almost complete now and the tabletop and wall-mounted cases are being fitted for specimens before the dust has settled from building the overall exhibit framework.

It’s a daunting but very worthwhile task. I get to pour over the master list, sitting in a holding and cleaning room while being stared at by anything from barnacles to a majestic Mountain Lion.

Five of my favorite reptiles have recently relocated to the Galapagos area in the East Pavilion. They are five Galapagos Tortoises mounted on the Tortoise wall. You might not know that Galapagos is Spanish for tortoise and the chain of islands made famous by Charles Darwin were literally named after their largest and oldest residents – the Galapagos Tortoise. One of the perks of double checking information on the Tortoises was noting their metal classification tags. They date back to early 1900's when these specimens were brought back to San Francisco on the Academy Schooner. The Galapagos collection from the Academy voyage revitalized the museum after existing collections were lost in the 1906 earthquake. After the Academy opens to the public, guests will be able to get up close to Academy history in way of the Darwin Finches and Galapagos Tortoises. Some of our collections have never been out on display before. The Finches need incredibly sensitive mounted cases because they are so rare and scientifically valuable.

Helping with this process and seeing the minute detail that is takes to present specimens in a museum setting has been remarkable. I spend a lot of time now going over tiny details but every minute will be worth it when the Academy opens.

Producer's Notes: Cal Academy Comes To Life

 

Chris Bauer by Chris Bauer  August 19th, 2008
37.7697, -122.466

By the time I was ten years old I knew the old California Academy of Sciences building by heart. After countless birthday parties, field trips and family outings, my brother and I, along with our sugar-filled urchin gang of friends and cousins, could have led tours of "the Aquarium."

There was the sunken swamp pit where we would crowd to the railing in hopes of seeing the alligators move. Around the other side were the strange amphibians and reptiles, where we would sidestep from window to window until we came upon the two-headed snake. There was the dark aquarium, were we could pretend to be underwater explorers, "diving" with sharks and electric eels and glow-in-the-dark fish. Then off to the planetarium to watch the pendulum swing, waiting impatiently for it to knock over a peg. We would go on a safari through African Hall with its dusty old stuffed lions, gazelles and giraffes, eat lunch in the courtyard and climb up on the smooth Bufano statues. Over 30 years later, I can close my eyes and see the whole place as it was. Glorious.

Nostalgia can be a pretty tough critic. When the California Academy began the process of replacing the old building in Golden Gate Park, I had little hope that they would "do it right." I had watched powerlessly as an incongruously stark copper "aircraft carrier" replaced the classical De Young Museum across the way. What would happen to "my" beloved aquarium?

My fears were somewhat alleviated as I watched the new Cal Academy building taking shape. In QUEST’s television story about green building, we learned about the living roof and other cool stuff. Still I reserved judgment until I could see it for myself.

When we got our behind-the-scenes tour, it blew me away. On the outside, while clearly modern in design, the building still flows well with the botanic surroundings. It looks like it belongs there, incorporating classic architectural elements harkening back to the cherished old Academy and maintaining a synergy with the other buildings in the park. On the inside the Cal Academy is very different from the place I see when I close my eyes. There is a new rainforest housed in what looks like a grand bio-dome. There is also a new planetarium, aquarium and natural history museum. While expanded and brilliantly redesigned, I think ten-year-old me would immediately recognize this place. They saved many of the iconic touches that made the old place so special to me.

For example, I had not realized how much impact something like a railing could make. But for a small boy rushing to see the alligators at the old aquarium, the first thing he would encounter without really realizing it would be that brass seahorse railing. They saved it and now countless more children will lean over those lined-up seahorses to look below at the alligators. They also saved the old pendulum; recreated African Hall much the way it was and they assured me the Bufano statues would have a home there. All these things fit in seamlessly with the beautiful new surroundings filled with light. I only wish the two-headed snake was alive to see it all.

Watch the "Cal Academy Comes to Life" TV Story online, as well as find additional links and resources.

Producer's Notes: Why I Do Science

 

Jenny Oh by Jenny Oh  July 29th, 2008
37.7697, -122.466

I had the pleasure of briefly meeting Dr. Robert Drewes, the esteemed Curator and Chairman of the Department of Herpetology at the California Academy of Sciences, upon his return from the Gulf of Guinea where he has been leading research teams over the past decade to study the unique flora and fauna of the islands.

He was still tired from his travels, but his exuberant personality and lively sense of humor were still intact despite his jet-lag. He supplied me a DVD of photos that illustrated his adventurous exploits over the years – such as grappling a giant python snake and mucking about in swamps at night in search of specimens – and proof that he certainly had a lot of fun in the field throughout the course of his long and productive career.

Learn more about Dr. Drewes and his passion for Africa and frogs in the "Why I Do Science" profile, and be sure to check out our story "Disappearing Frogs" about Bay Area researchers investigating the decline of frog populations.

Next Page »