alternatehistory.com

This is inspired a bit by the Long Earth series of novels. http://en.wikipedia.org/wiki/Long_Earth

If humans had never evolved what species would would be found on earth?
For simplicity's sake, let us start with the Americas.
I know that many expert's place human hunting as the main cause of the ice age megafauna extinctions, but does that mean climate played no role? Would the exact same fauna , be found today in the America's that were there when the first humans arrived?
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