Some studies suggest that the Arctic Ocean may be ice-free by the end of the century.

In the Arctic, things are already getting freaky. Temperatures have warmed three times faster than the global average.

In the world of energy politics, the sudden vanishing of the word 'coal' is a remarkable and unprecedented event.

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.

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

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

In the U.S. alone, weather disasters caused $50 billion in economic damages in 2010.