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

When it comes to global warming, coal is the gorilla in the room.

When it comes to climate and energy, Gates is a radical consumerist. In his view, energy consumption is good - it just needs to be clean energy.

Climate scientists have long pointed to the Southwest as one of the places in the U.S. that is most vulnerable to global warming impacts, especially drought. And if there's one thing that even climate denialists don't dispute, dry things burn.

So if you want to know how Exxon Mobil can make $10 billion profit in 90 days, just look around. The whole world was built for them.

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.

Obama's record on climate issues is not all bad.