Thought California has consigned coal-burning to the scrap bin? Think again! California has 11 coal-fired power plants, all used to heat limestone into cement -- making us one of the biggest cement-producing states in the country. In addition to cement, these kilns produce 95% of the state's airborne mercury pollution and 2% of its greenhouse gas emissions. Mostly, they've slipped under the radar of regulators, but that is changing fast.
Duration:
05:45 Original Air Date:
Friday, Apr 4, 2008
Did you know there is a half-mile wide, thousand-foot deep hole dug into the dusty red rock in the hills above Cupertino? QUEST Associate Media Producer Lauren Sommer brought her camera to this abyss, and snapped behind-the-scenes photos for our "Cement - A Dirty Business" radio report.
The cement kiln in our story produces more greenhouse gas than any other single source in Santa Clara County – over a million tons a year. But is this just about the kiln? Or our own appetite for new roads, buildings, and dams?
Discuss "Cement - A Dirty Business" on the QUEST Community Science Blog.
You might not know it from the textbooks, but California's gold rush was also a mercury rush. Quicksilver mines near San Jose provided gold miners with the mercury they needed to separate gold from ore. 150 years later, we're still facing the consequences of gold-rush era mercury.