It pops up in the news from time to time: the death-by-selfie. Earlier this month, for example, a teenager in India was struck and killed while trying to take a picture of himself in front of an oncoming train. Now the economics site Priceonomics has attempted to gather the existing statistics about the people who've lost their lives while taking selfies, combing through three years of news reports indicating a death was "precipitated by a selfie," or that a person had died while attempting to take a photo of themselves.