Got the following from an article: According to one of the theories on the shrinking of brain, “The big heads were necessary to survive Upper Paleolithic life,

Got the following from an article: According to one of the theories on the shrinking of brain, “The big heads were necessary to survive Upper Paleolithic life, which involved cold, outdoor activities.” Another theory said, “The skulls developed to cope with a chewy diet of rabbits, reindeer, foxes and horses. As our food has become easier to eat, so our heads have stopped growing.” http://www.themedguru.com/20110102/newsfeature/shrinking-brains-leading-unintelligent-humans-study-86143216.html http://www.themedguru.com/20110102/newsfeature/shrinking-bra...