Anyone ever read "Seven Views from Olduvai Gorge" by Mike Resnic? Real good. Makes you think. It's a story about mankind's rise from stone wielding "proto-human" to their dominance of the stars and thier eventuall downfall.
Here's the story if you want to read it:
http://koapp.narod.ru/english/fantast/book48.htm
And for those who want some proof to back up the theroy that life started here, start here (see also Dr Richard Leaky):
http://emuseum.mankato.msus.edu/arch...vai_gorge.html