rainbow wrote: Peter Brown wrote:
Popular theory states that Homo sapiens migrated out of Africa about 60,000 years ago, at which point modern humans quickly replaced early human species such as Homo erectus and Homo neanderthalensis across the world.
I understand 60,000 years ago was too late as the geographical conditions formed a barrier to migration. The correct date was about 100,000 years for the wave that populated the rest of the world, but there was at least one earlier wave that didn’t survive as they got caught going north when the climate changed to desert.
What barrier to migration?
Do you have a source to confirm this?
Indeed I do, it was part of the documentary The Incredible Human Journey documentary. I believe you’ll find the series on you tube.
Egypt to Israel was fertile and allowed walking migration; it didn’t last long and turned to dry arid desert. This explains how human remains were found in Israel dating to a first failed wave out of Africa.
The wave that we came from exited via Ethiopia to Yemen, following water holes now under the ocean in Yemen. The Red Sea passage they crossed was difficult to pass back then, however they did it, but the water barrier grew wider preventing further migration.