9. Libby, Montana

Nestled below the rugged peaks of the Northern Rockies in Montana—as iconic a representation of America’s “purple mountain majesties” as one can find—lies the worst case of community-wide exposure to a toxic substance in U.S. history. In the small town of Libby, many hundreds of people are sick or have already died from asbestos exposure. Libby, Montana takes a long working day’s journey into a blue-collar community, and finds a different reality—one where the American Dream exacts a terrible price. (packaged to 86:46)