It’s one of military history’s most exciting chapters. In 218 BCE, Carthaginian general Hannibal crossed the Alps with a squadron of 37 war elephants to invade Italy. While we can’t say which route he used to cross this rugged terrain, a new study published today in the journal Proceedings of the National Academy of Sciences (PNAS) offers some new clues. The new analysis shows which of Hannibal’s ...