Feral swine, "the worst invasive species we'll ever see"

They’re called feral swine, wild boars, feral hogs and wild pigs. Farmers refer to them as the “rototillers” of nature. Found in at least 35 states with a population of more than 5 million, feral swine cause at least $1.5 billion in damages and control costs in the United States each year, conservatively. About a quarter of that damage happens in Texas. Marketplace takes a look at the feral swine problem.

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