RE: If modern humans emerged 100,000 years ago, why didn't civilization appear until only about 10,000 years ago?
The average lifespan of a human was into the late twenties way back when.
Longer life span.
It seems our decendents may be in for a longer life span in the not too distant future,click here for full story.
Link is dead (as is the website that hosted it). Here is the text of the MIA article:
SALVAGED FROM THE WAYBACK MACHINE...
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