Add Yahoo as a preferred source to see more of our stories on Google. A new festival celebrating the Ohio River and its role in American history is set to take over Cincinnati and Northern Kentucky.

A thriving river, teeming with wildlife. A future in which the city meets its own water needs without importing extra from elsewhere. Can Los Angeles have both? That’s the challenge facing a city that ...

Mississippi River water levels are plummeting to an all-time low this week at Memphis in the wake of a sweltering summer and ongoing drought – setting a record for the second consecutive year, new ...