There have been periods of massive glaciation, but there have never been periodic ice ages, they’ve happened rapidly, and at random intervals. And there was no ‘population bottleneck’ at Toba — there’s no genetic evidence for it, any more than there’s genetic evidence for out-of-Africa. And the archaeological evidence is to the contrary.
Toba super-volcano catastrophe idea ‘dismissed’
http://www.freerepublic.com/focus/chat/3015183/posts
Modern Humans in India Earlier Than Previously Thought?
http://www.freerepublic.com/focus/chat/3067171/posts
‘Pompeii-Like’ Excavations Tell Us More About Toba Super-Eruption
http://www.freerepublic.com/focus/chat/2464512/posts
Lucy could have wandered into the Afar Triangle as well as wandered out, same goes for a lot of human diffusion.
Why do no White people live South of the, historically, Atlas Mountains or the Third Cataract of the Nile? Why did they live on the China Boarder?
I have looked at this for Sixty years and am lost.