Nature World News: Dolphins, like humans, are expert imitators, finding ways to sense out what the other party is doing even when their sight is blocked. Led by researchers from the University of Chicago, the finding could offer potential clues as to why this behavior of copying another’s actions ever evolved, the scientists report. The team blindfolded a bottlenose dolphin named Tanner and instructed him to mimic the actions of a trainer. In all, more than a dozen actions already familiar to the dolphin were performed,…