there’s interesting news on a 60kya fossil of an anatomically modern human w/ different mtDNA from humans today. while, this finding could suggest that we’ve lost some genetic diversity, i don’t think it really is enough evidence to do much to discredit the out of africa theory (in favor of the multi-regional hypothesis), which has ample evidence of it’s own (self reference: $). the loss of genetic diversity isn’t much of a surprise, with recent discoveries anyway… of course i’m no expert, this is just my gut reaction. i have no doubt that the most interesting stuff has yet to be discovered.