The rate of global warming has surged since 2015 and is now nearly double what it was in the 1970s, according to a study 1 that tackles one of the hottest debates among climate scientists.

A controlled burn in the Holland Hill Barrens area of Mashpee National Wildlife Refuge is shown. The burn was conducted by the Town of Mashpee, U.S. Fish and Wildlife Service, State of Massachusetts ...

Since the 1970s, the U.S. has lost billions of birds. We now know that those losses aren’t just growing – they are ...