The Environmental Protection Agency issued a pronouncement in December 2009 to regulate greenhouse gas emissions. 

It claimed it was using the authority provided it from the Clean Air Act and the May 2007 U.S. Supreme Court ruling inMassachusetts v. EPA that "greenhouse gases in the atmosphere endanger both the public health and the environment for current and future generations."

Can the bicycle save the world? This Saturday, hundreds of thousands of people around the world will be hopping on their bicycles and taking to the streets for Moving Planet, a global demonstration coordinated by 350.org. 

Friday was an important day for everyone, and I’m not speaking of religious circles. Friday was Earth Day 2011. And whether you think about it or not, or you care about it or not, I believe we are lucky to have people out there who do care enough to do what’s best for our planet. We need it to survive, after all.

Earth Day started in 1970, the idea of a then U.S. Senator from Wisconsin, Gaylord Nelson. The massive oil spill in Santa Barbara, Calif. the year before spurred his enthusiasm for becoming an activist in the fight to clean up our water and air.

The majority of electricity production in the United States comes from the combustion of fossil fuel. However, the low price of electricity derived from fossil fuels such as coal do not reflect the complete cost.

The following editorial appeared in the Los Angeles Times on Sunday, Feb. 6: Conservatives have been attacking the Clean Air Act since its passage in 1970, continually claiming that federal efforts to fight air pollution would wreak economic ruin. As congressional Republicans prepare to fire their latest broadside at the law, it's worth remembering how inaccurate these predictions have proved.