http://www.bbc.co.uk/news/science-environment-12300228

http://news.blogs.cnn.com/2011/01/27/humans-may-have-left-africa-for-eurasia-earlier-than-believed/?hpt=C2&hpt=C2

http://www.sciencemag.org/content/331/6016/387.short

Modern humans may have emerged from Africa up to 50,000 years earlier than previously thought, a study suggests. Researchers have uncovered stone tools in the Arabian peninsula that they say were made by modern humans about 125,000 years ago.