When the federal government abrogates its duties under the Clean Air Act or Clean Water Act, does that mean that impacted communities just go along with it?

Arnold Schwarzenegger's legacy as arguably the greenest chief executive in our country's history will rival Mr. Universe titles and box office championships.

SACRAMENTO, Calif. — The campaign against Proposition 23 – the ballot initiative that would push back California's landmark global warming...

Polls now show that opponents of California's anti-environment ballot initiative outnumber supporters by eleven points. But there are still many undecided voters and the barrage of polluter-funded deceptive ads is just starting.

As the old cars are scrapped and the age of our national fleet is modernized, the improvement in the air we breathe continues. Sometimes "legislating technology" can actually work.

Texas oil companies want to stop California before we can really implement AB 32, our landmark climate change legislation.

This is the problem of narrating climate change: it lacks the natural elements that make for a gripping story. Our earth's climate is a reality unfit for reality TV.

SACRAMENTO, Calif. — California on Thursday adopted the nation's most sweeping plan to cut greenhouse gas emissions, issuing rules that could tr...

Our companies are not in the energy business, but both of them are making substantial investments in energy efficiency and clean power, not just to be good corporate citizens but because it's good for the bottom line.