WASHINGTON—The polar vortex hit its peak across much of America on February 19, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has been warmer ...

Parris, wife of a US veteran being held in ICE custody for the past month, describes to CNN’s Victor Blackwell the moment she ...

Over the past two decades, glaciers worldwide have lost 273 billion tonnes of ice to a warming world, driving sea levels to ...