Houston we have problem

[Slyspy]

And what was the estimated human population last time we ran away from the glaciers? What were the settlement patterns?

[gaelic cowboy]

And what was the estimated human population last time we ran away from the glaciers? What were the settlement patterns?

Probably a few hundred thousand maybe even a few million globably essentially not a large ammount and with plenty room to move into.

But the thing is we actually moved into the ice sheets we didnt run away from them at all, academics are now even asking if people may have crossed from Europe to America on the early ice sheets across the North Atlantic.

Why they moved into the ice sheets is because they had the technology and social structure to survive in the enviroment, and the flora and fauna had time to adapt or move. Take Oak trees as an example they will not have time to move north quick enough if we rise the temperature fast enough, this would severly restict the birds and animals that depend on them for food and shelter.

This would mean only the animals and plants that can move quick enough will survive and that may be a severly stunted eco system. Basically it might take millions of years to develop new flora and fauna to fill the empty niches, however it's likely we will prevent most of them being filled.