This week, discover the Sahara’s greener past, explore a mysterious cosmological force, marvel at a new concept for space ...

This striking astronaut photo shows off an "eye-catching" impact crater in the Sahara Desert. The oculus-like structure is surrounded by migrating sand dunes that are capable of traveling more ...

A vast expanse of towering sand dunes? The occasional ... of the world’s largest hot desert isn’t actually sandy at all. Just 25 percent of the Sahara’s surface is covered by sand.

Researchers studied the DNA of two 7,000-year-old naturally mummified individuals excavated in the Takarkori rock shelter in ...

THERE'S a little-known beach in Italy that looks like the Sahara Desert. With huge golden sands ... of Italy” and has some of the highest sand dunes in Europe. Piscinas is surrounded by ...

Water rushing between the sand dunes of southern Morocco. In desert communities frequented ... have given a different face to the Moroccan Sahara, better known for its frequent droughts.

A gold rush has broken out in the Sahara in recent years. Thousands of young Africans are digging in the sea of sand with ...

This is the Sahara of dread. A waterless sea of sand and stone ... Ninety-five percent of Libya is desert, 20 percent is dunes, and not a single perennial river runs through it.

The Kalahari Desert has beautiful red sands that provide a scenic backdrop for hikers. This semi-arid area hosts different ...

Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. To get it in your inbox, sign up for free here. Picture the Sahara, and an inhospitable landscape of ...

Star dunes - sometimes called pyramid dunes - stand out among sand dunes for their towering height and eye-catching form.