Is the Out of Africa Theory Out?
"All the ancestors of contemporary Europeans apparently did not migrate out of Africa as previously believed. According to a new analysis of more than 5,000 teeth from long-perished members of the genus Homo and the closely related Australopithecus, many early settlers hailed from Asia.
Erik Trinkaus, a physical anthropologist at Washington University in St. Louis (who was not involved in the study), says most evolutionary biologists and anthropologists believe there were three major waves of migration from Africa to Europe: the first occurring about two million to 1.5 million years ago during the late Pliocene and early Pleistocene epochs; a second during the mid Pleistocene, roughly one million to 500,000 years ago; and ending with the spread of modern humans, 50,000 to 30,000 years in the past.
The new findings, published this week in Proceedings of the National Academy of Sciences USA, casts doubt on the second migration out of Africa. '[The researchers] are not denying that it happened,' Trinkaus says, 'just that it was less important than movement across Eurasia...'"