> << All of these points indicate that man is not really designed for a life
of
> >  hunting and  gathering in the arid grasslands

Homo Sapiens evolved to inhabit a very wet grassland, the steppe-tundra
grasslands of the Pleistocene.  These areas not only had high precipitation
rates but also retained water in surface ponds because of permafrost.  This
permafrost also inhibited the growth of trees.  From pollen counts we know
that this environment contained more grass than we produce today even after
deforestation and agriculture have laid waste to the great forests of the
world.  These grasslands supported in turn huge populations of herbivores
which in turn expanded the grasslands by browsing during their winter
migrations into regions without permafrost.

This lush environment could support many more people per acre than any arid
grassland populated by historical hunter-gatherers.

Ray Audette
Author "NeanderThin"
http://www.neanderthin.com