Were Rivers Flowing across the Sahara During the Last Interglacial?

Coulthard TJ, Ramirez JA, Barton N, Rogerson M, Brücher T (2013) Were Rivers Flowing across the Sahara During the Last Interglacial? Implications for Human Migration through Africa. PLoS ONE 8(9): e74834. doi:10.1371/journal.pone.0074834
100,000–130,000 years ago, African monsoons reached as much as 1,000 kilometres farther north than they do now and brought torrential rains to the mountains ranges south of the Sahara Desert. This may have allowed migration, "....enabling early modern humans to migrate north and eventually to other continents",  Mike Rogerson, a palaeoclimatologist at the University of Hull and a co-author of the study. Follow this link for a full article  http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0074834