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Scientists get down and dirty with DNA to track wild pigs

from NPR

In the foothills of Colorado's Rocky Mountains, a gravel road leads to a 10-foot-tall fence. Type in a key code, and a gate scrapes open. Undo a chain to get behind another. Everything here is made of metal, because the residents of this facility are experts at invasion and destruction. They're wild pigs, aka feral swine, wild hogs or Sus scrofa. And biologists at the National Wildlife Research Center in Fort Collins have invented a promising new way to track the invasive animals by looking for tiny traces of them in mud and water. more

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