The Larger Brains of Humans Come With a Tragic Cost, Study Finds

Intelligence has allowed our species to not just survive, but thrive across a range of environments. But new research reveals our advantageous smarts come at a cost: a much greater susceptibility to brain decay. Heinrich Heine University neuroscientist Sam Vickery and colleagues have found the extra neurological capacity we've developed since parting ways with our closest relatives more than 6 million years ago has made our gray matter more vulnerable to the impacts of aging. Vickery and his team applied …