The president's decision secures his legacy on fighting global warming, but it will be up to his successor to implement the plan.
Washington's and Ankara's goals, while overlapping in some ways, are far different in others, mainly on the question of how to handle Kurdish militants battling Islamic State fighters.
Facing increased competition, the candidate is spending $2 million airing the first television ads of her presidential race in Iowa and New Hampshire.
From the first hours after a white police officer shot a black 18-year-old, Jim Salter watched as a neighborhood protest in a St. Louis suburb launched a national campaign.
Puerto Rico is at risk of defaulting on at least part of its $72 billion in public debt, leaving many on this U.S. island fearing that life could soon get much worse.
Numerous homes remain threatened, while more than 9,000 firefighters battle 21 major fires in the state, officials say.
Many on the streets say there's already too much competition for limited rides.
Zimbabwe accuses a Pennsylvania doctor of illegally killing a lion in April, adding to the outcry over a Minnesota dentist who killed a lion named Cecil in July.
New research suggests the problem is rarely worth fretting over, although in a small portion of kids it may signal emotional troubles that should be checked out.
"If there should be cases involving results at Olympic Games, the IOC will react with zero tolerance with our usual policy," says IOC President Thomas Bach.