TIME.COM - Just look at all the amazing innovations modern technology has given us: at-home HIV tests, motion-activated screwdrivers and self-inflating tires. It's easy to look down on our prehistoric ancestors for their primitive, electric screwdriver-less way of life. But one scientist says we shouldn't be so quick to judge.
In a two-part paper published in the journal Trends in Genetics, Stanford University researcher
Gerald Crabtree suggest that evolution is, in fact, making us dumber—and that
human intelligence may have actually peaked before our hunter-gatherer
predecessors left Africa. click here to read more