In the farthest reaches of Antarctica, a nightmare scenario of crumbling ice – and rapidly rising seas – could spell disaster for a warming planet.
Saturday's protest might not change minds in the Trump administration, but it will be important nevertheless
Pushing fossil fuels and killing climate rules will not keep America strong and safe
"We have not hit the disastrous level," says leading climate scientist James Hansen. "But we are close."
Scott Pruitt is most notable for the many lawsuits he's filed against the agency he's now supposed to lead
The future of America's greatest city is at risk
Self-driving cars, war outsourced to robots, surgery by autonomous machines – this is only the beginning
We may be on the verge of creating a new life form, one that could mark not only an evolutionary breakthrough, but a potential threat to our survival as a species
How the historic U.N. climate deal came together, and where we go from here
World leaders agree to take meaningful steps to slow the impacts of climate change
"If you love liberty, Paris is your hometown," Bono tells crowd during emotional performance
The secretary of state discusses the challenges that lie ahead at the United Nations Climate Summit
"I don't want to get paralyzed by the magnitude of this thing. I'm a big believer that imagination can solve problems," says the president
The president's speech came just a week after approving a new round of drilling in the Arctic
The leaders of our armed forces know what's coming next – but deniers in Congress are ignoring the warnings