Joe Biden's climate change agenda was a surprising success — and a cautionary tale for future Democratic leaders.

For most environmentalists, the day that Donald Trump got elected president in November was “a dark day.” But there was one ...

Trump calls climate change a hoax. But at the state level, the climate fight will continue — or even accelerate.

He was elected in 2016, at the tail end of a period when technological progress and social progress still seemed intertwined.

The youth climate group wants bans on super PAC spending in primaries and corporate lobbyist donations to the DNC.

Ore., about his new book, "It Takes Chutzpah: How to Fight Fearlessly for Progressive Change," which is part memoir and part strategy guide.