Unless there's a serious pileup, ants in traffic tend to bypass a collision and just keep going. A physicist has found a way to model this behavior with a mathematical equation. iStockphoto hide caption

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Recovery workers vehicles back the front of the Sheppey crossing bridge after 100 or more vehicles were involved in a major road traffic incident in Sheppey, Kent, southeast England on Thursday. Justin Tallis/AFP/Getty Images hide caption

itoggle caption Justin Tallis/AFP/Getty Images