http://www.kqed.org/.stream/anon/radio/quest/2008/04/2008-04-07-quest.mp3
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.