Bloomberg's $50 million is not going to revolutionize the electric power industry. But his willingness to fight is already inspiring others to see Big Coal differently.

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

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

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.

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

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.

The coal industry is an even larger part of the Australian economy than it is of the American, and it has an enormous amount of political power.