This story appears in the December 2013 issue of National Geographic magazine ... humanity’s birthplace in the Great Rift Valley of East Africa, I am retracing, on foot, the pathways of the ...

But thanks to the amazing work of anthropologists and paleontologists like those working on National Geographic's Genographic ... early humans spread from East Africa all around the world.

This story appears in the January 2012 issue of National Geographic magazine ... burps have shaken the area in the years since. East Africa's Afar depression is one of the world's most ...