From the press release :
"Human races are evolving away from each other," Harpending says. "Genes are evolving fast in Europe, Asia and Africa, but almost all of these are unique to their continent of origin. We are getting less alike, not merging into a single, mixed humanity." He says that is happening because humans dispersed from Africa to other regions 40,000 years ago, "and there has not been much flow of genes between the regions since then."
I'll be reading the paper and posting thoughts if I have them. Sailer's work is enough to keep anyone busy for awhile, though.
This does, of course, lend plausibility to the thesis that human populations differ significantly in the prevalence of important genes, including genes that influence IQ.
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