A new study shows just how much CO2 -- and lives -- we'd save if we just cut our meat consumption in half by 2050.
Watch about 150 activists disrupt the auction for offshore drilling leases in the Gulf of Mexico.
McConnell is advising states to "wait and see" before complying with the centerpiece of Obama's climate agenda.
California can claim first place in just about every clean-energy category.
The tech giant keeps pushing new products we don’t really need.
We read James Hansen’s terrifying new climate study, so you don't have to.
He's "not a big believer" in that more traditional kind of climate change, he tells the Washington Post editorial board.
Red wants to turn your kids into little climate hawks.
With their victory against Atlantic offshore drilling behind them, activists set their sights on shutting down new leases in the Gulf.