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.

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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.

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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.”