When it comes to energy, cost isn't everything - but it's a lot. Everybody wants cheap power.

In reality, studies show that investments to spur renewable energy and boost energy efficiency generate far more jobs than oil and coal.

Have we failed to slow global warming pollution in part because climate and environmental activists have been too polite and well behaved?

President Obama is in no danger of being judged by history as an eco-radical.

In the United States, we do a pretty good job of protecting iconic landscapes and postcard views, but the ocean gets no respect.

Bill Gates is a relative newcomer to the fight against global warming, but he's already shifting the debate over climate change.

One of the big questions in the climate change debate: Are humans any smarter than frogs in a pot? If you put a frog in a pot and slowly turn up the heat, it won't jump out. Instead, it will enjoy the nice warm bath until it is cooked to death. We humans seem to be doing pretty much the same thing.