Professor Stephen Oppenheimer Books Interesting graphically shown story of man my son sent me.
Wonderful link. Thanks for posting it!
I only recently learned about the Mt. Toba event and just how close it came to wiping us out completely 80,000 ya. Pretty amazing story and yet our entire existence seems peppered with similar near calamities, a whole bunch of things that had to be just right for us to be here at all.