An Astounding Amount Of Saharan Dust Fuels The Amazon Basin

Using satellite data, NASA scientists have created the first-ever 3D model showing just how much dust makes its way from the Saharan Desert to the Amazon forest. Incredibly, this dust is seeding the rain forest with an essential nutrient, an indication of just how interconnected these disparate regions really are. » 2/24/15 9:40am 2/24/15 9:40am

Three mighty rivers once flowed through the Sahara

The world's most famous desert isn't always quite so dry as it is now—thanks to the Earth shifting on its axis, the Sahara's climate gets gradually greener over tens of thousands of years. But you'd have to go back a long ways to find real, perennial rivers flowing through the Sahara outside of the Nile. But 100,000… » 9/15/13 11:00am 9/15/13 11:00am