America's Heartland: Wild Prairie Reborn

A visit to the American Prairie Reserve, a piece of northern Montana that's on track to become the largest protected ecosystem in the continental United States. Home to pronghorn and grizzlies and a mosaic of public and private land, it has a singular goal - to restore these grasslands to their natural state. Collectively, these scientists aren't simply trying to understand how the prairie worked before European settlement. Rather, the focus is on how native wildlife can co-exist with the people who live there.