The world's largest iceberg, known as A23a, is on a collision course with South Georgia Island, a delicate ecosystem that is ...

San Francisco could see as much as six inches of rain over the next week as a moisture-packed storm known as an atmospheric river works its way south from the Pacific Northwest.

You might be hearing about the gulf off the coast of the U.S. and Mexico. Here's what to know about the body of water the ...

A new study suggests the Atlantic Meridional Overturning Circulation has not weakened since the 1960s — but there's no doubt ...