It’s a bird, it’s a plane, it’s a … river in the sky? It sounds strange, but it’s true. Atmospheric rivers are airborne streams of water vapor that flow through the sky. The term was first coined in a ...

Many different countries have long rivers, and the U.S. is no exception, but that river is more complicated and unique than ...

The region drained by the Amazon River, including the Amazon rainforest, is in the second year of a punishing drought. That has led to the lowest water levels in more than 100 years for the Amazon and ...

O'FALLON, Mo. -- The nation's two largest rivers top a new listing of the most endangered waterways, according to a report released Tuesday. The Washington, D.C.-based conservation organization ...