The American West was won by water management. What happens when there's no water left to manage?

Vast reaches of the planet have been locked for millennia in permafrost formations. But perhaps not permanently.

Surface temperatures on Earth are warming at a pace that signals a decisive shift in the global climate.

Scientists disagree on the effect global warming may have on hurricanes.

Most of the lakes formed by melting ice drain through passages called moulins to bedrock below.

Global warming threatens the desert trees, which lost their main migrating method: ground sloths.