Napoleon's retreat from Moscow in 1812 is widely regarded as one of history's worst military disasters. Using DNA from the teeth of Napoleonic soldiers, geneticists from the @institut.pasteur in Paris identified two species of fever-causing bacteria. According to Rafe Blaufarb, a professor in @fsuhistory, these findings support historians' belief that Napoleon's troops died from rampant disease in addition to the bitter cold and hunger. To learn more about how Napoleonic history experts like Blaufarb are using modern research to unravel mysteries of the past, check out the full article in @sciencenewsmagazine by visiting sciencenews.org.