A new study argues it happened all the way back when we invented farming.
Germany is gearing up for an unusual challenge to its clean-energy revolution.
The overall price of solar—panels, installation, and financing—dropped 10 percent compared to 2013.
A look at which states' farmers could benefit from climate change—and which ones will lose big time.
Record-breaking snow is expected across the Northeast.
Stay tuned over the next several months for commitments from key players like India, Russia, and Australia.
Which means 2014 is still on track to become the warmest year ever.
It could be over 95 degrees most of the year in Florida by the time Millennials retire.
Piles of fake snow at the Olympics are just the latest sign of an industry on the brink.
Find out with this handy new map.
But flood insurance hikes may make this quiet beach-side neighborhood unaffordable for many residents.
Amazingly, half the cuts came from reductions in household energy use.
Scientists warn of "unequivocal" climate change that is "unprecedented over decades to millennia."
The major report will include updates on everything from how long CO2 hangs out in the atmosphere to dangers posed by sea level rise.
International security experts explain how low rainfall can evolve into violent conflict.
Climb aboard NASA's biggest flying laboratory to discover the climate change secrets of clouds.
Natural coastal ecosystems are protecting twice as much coastline and 1.4 million people from climate risks.
What the nation's first wide-ranging strategy for tackling climate change will look like.
The government pours billions into fighting fires but skimps on cheap, proven methods for stopping megafires before they start.