The earth’s water cycle is speeding up twice as fast as climate models predicted, which means more droughts and more floods.

The Kochs’ super PAC spent $6.1 million — more money than it’s ever spent before on a single ad — on this ad criticizing the president’s green energy spending.

Now Peru has a domestic climate change policy. Soon it’ll just be the U.S. holding out.

In Africa, foreign investors have bought up land of an area the size of Kenya.

The University of Southern California is making a video game called Walden, in which users can walk around a virtual rendering of the woods as Thoreau experienced it.

Steve Coll’s book on ExxonMobil is “impartial,” “dispassionate,” and “perhaps too stoic for its own good.”