Paleoclimate and archaeological evidence tells us that, 11,000-5,000 years ago, the Earth's slow orbital 'wobble' transformed today's Sahara ... across North Africa from the hyperarid desert ...

In the middle of the 19 th century, the German explorer Heinrich Barth discovered prehistoric Saharan rock sculptures and engravings while traveling through the Sahara Desert in North Africa. Barth, ...

The fascinating North ... Sahara Desert thousands of years ago. Their genetic makeup was shockingly different to what scientists usually expect to find among ancient humans travelling around Africa.