The Shrinking Brain

Our Stone Age ancestors had more gray matter than we do. Are we more efficient, or are we not as bright?

stone-age-skull
John Hawks is in the middle of explaining his research on human evolution when he drops a bombshell. Running down a list of changes that have occurred in our skeleton and skull since the Stone Age, the University of Wisconsin anthropologist nonchalantly adds, “And it’s also clear the brain has been shrinking.” “Shrinking?” I ask. “I thought it was getting larger.” The whole ascent-of-man thing. “That was true for 2 million years of our evolution,&r...
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