<p>We may share a common ancestor with chimpanzees, but somewhere along the evolutionary line to us, our brains took a major detour. New research suggests that chimpanzees can rationally weigh evidence, a trait that used to be thought as uniquely human.</p><p><br></p><p>PLUS:</p><p><br></p><ul><li>Why penguin-eating pumas live closer together in Patagonia</li><li>Ants sacrifice the strength of individual workers for quantity</li><li>Mapping the landmass beneath Antarctica's massive ice sheet</li><li>How deep sea ocean environments affect fish body shape</li></ul>
