Cara Tabachnick is a news editor at CBSNews.com. Cara began her career on the crime beat at Newsday. She has written for Marie Claire, The Washington Post and The Wall Street Journal. She reports ...

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 ...

The Sahara desert, once lush and green, during a time between 14,500 and 5,000 years ago, was also home to a mysterious human lineage, a new study has found. Researchers from Germany's Max Planck ...