"An Inconvenient Truth" turned the former vice president into a climate hero. Will he reclaim the mantle with "An Inconvenient Sequel"? Many activists in the environmental movement hope not.

Climate scientists say New York magazine's cover story about global warming is unnecessarily apocalyptic. But can fear help the planet?

Animal welfare advocates thought the Ringling Bros.' 15 big cats might be sent to a wildlife sanctuary after the circus closed. They thought wrong.

CNBC's "Squawk Box" has become the go-to show for officials like Rick Perry and Scott Pruitt to spout falsehoods about global warming.

Six years after the floods, indigenous Canadians are still homeless.

Trump's withdrawal from the Paris agreement came as a huge relief to them. Now they're setting their sights on bigger prizes.

A handful of Democrats and Republicans in Congress have joined forces to find political solutions to climate change. But if they can't even agree on Trump's Paris withdrawal, how can they accomplish anything?

California Governor Jerry Brown went to China this week to meet with President Xi Jinping and sign an agreement on reducing emissions.

Does the president accept global warming? The White House won't say. But the U.S. withdrawal from the Paris agreement is worth a thousand denials.