The Sahara Desert is one of Earth's most arid and desolate places, stretching across a swathe of North Africa that spans parts of 11 countries and covers an area comparable to China or the United ...

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 ...

Scientists believe that natural climate cycles, climate change, and human activities could potentially transform the desert into a green landscape again. Thousands of years ago, the Sahara Desert ...