April 4 (Reuters) - 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 ...

Sahara Desert, Once Lush and Green, Was Home to Mysterious Human Lineage By Will Dunham (Reuters) -The Sahara Desert is one of Earth's most arid and desolate places, stretching across a swathe of ...