Coal boosters like to tout coal as cheap and plentiful - well, not anymore. At least not in China.

Mark Ruffalo, aka the Incredible Hulk, is the natural gas industry's worst nightmare: a serious, committed activist who is determined to use his star power as a superhero in the hottest movie of the moment to draw attention the environmental and public health risks of fracking.

Some studies have shown that natural gas could, in fact, be worse for the climate than coal.

Geoengineering - the deliberate, large-scale manipulation of the earth's climate to offset global warming - is a nightmare fix for climate change.

Among all the tests President Obama faced in his first term, his biggest failure was climate change.

Although most Americans don't know it, the U.S. gets more oil from Canada than it does from the entire Middle East.

Bloomberg is famously impatient with beltway politics and believes that to get anything done you need to work from the ground up.