Nearly 200 nations have reached a deal to limit the use of greenhouse gases far more powerful than carbon dioxide in a major effort to fight climate change.
Experts say cutting hydrofluorocarbons, or HFCs, is the fastest way to reduce global warming. The United States, the world's second-worst polluter, is among the countries that want to quickly phase out the use of HFCs, and now it is bound to take the earliest action, starting by 2019. Here's a look at what it all means.
A group of young orphaned sea lions are let out of pet carriers before release into their natural habitat, in the coastal waters of the Palomino Islands, Peru, Friday, Oct. 14.
Maia grunts and nervously moves her huge body back and forth while being released from a transport container to a new home. Here, there are no gawking crowds for the Asian elephant that has spent her life in captivity. There are no blows from bull hooks, no one demanding tricks like people did when she was in the circus.
A California condor chick has hatched in the wild, survived and flown out of its nest at Pinnacles National Park for the first time since the 1890s, officials said Wednesday.
Rwanda's President Paul Kagame urged world leaders to rid the world of potent greenhouse gases used in refrigerators and air-conditioners, as he opened a high-level meeting in Kigali Thursday.
Extreme floods unleashed by massive storms on the scale of Hurricane Sandy in 2012 are expected to rise sharply in the coming decades in the New York City area, researchers said Monday.
Climate change is making the planet hotter and drier, and has about doubled the area burned by forest fires in the western United States in the past three decades, a study said Monday.
A privately funded great white shark research group has confirmed the waters off Long Island's Montauk Point are a "nursery," a first in the study of great whites in the northwest Atlantic Ocean, the organization and other leading scientists say.
Already dealing with parched conditions, the U.S. Southwest faces the threat of megadroughts this century as temperatures rise, says a new study that found the risk is reduced if heat-trapping gases are curbed.