The three nations will announce ambitious climate plans this week.
Schwarzenegger and James Cameron team up to curb meat eating.
Bernie Sanders wants tougher climate and energy provisions, but Hillary Clinton’s appointees have blocked them.
But if the city takes some smart steps, it could save many lives.
The Canadian company is using NAFTA to claim that the U.S. owes it $15 billion for not building the Keystone pipeline.
United Nations climate chief Christiana Figueres is preparing to run for secretary-general.
The city is pumping out so much groundwater it's sinking 4 inches a year.
Former London Mayor Boris Johnson isn’t exactly a climate denier. But he’s something.
West Virginia is flooding in a pretty terrifying way.