Scientists graded every river and stream in the contiguous United States, flagging specific repairs each one needs to support aquatic life.

Atmospheric rivers—those long, narrow bands of water vapor in the sky that bring heavy rain and storms to the U.S. West Coast and many other regions—are shifting toward higher latitudes, and that's ...

Add Yahoo as a preferred source to see more of our stories on Google. The nearly 3 million rivers that weave across the world are experiencing rapid and surprising changes, with potentially drastic ...

Global warming is often treated as synonymous with climate change, but rising temperatures are only one consequence of the ...

Philip Rivers will try to rescue the playoff hopes of the Colts, who have lost three straight games. Chris Unger / Getty Images ENGLEWOOD, Colo. — Eighteen months before embarking on an improbable NFL ...