[hellbender]

But then the group got stuck for up to 5,000 years, blocked by thick ice sheets across Canada...It was only when the ice had melted sufficiently that humans began to spread south...

"We all have open minds, and we will leave them open," Harpending said.

Speaking of open minds, he should remind the warming alarmists that Global Warming made settlement of the Americas possible.

[tbw2]

And vegetarianism!
Prior to agriculture, made possible by global warming, humans were hunter gatherers, with an emphasis on the hunting.