The Badlands of America: a geological phenomenon that provides a 75-million-year history lesson, presented layer by colorful layer. By all appearances, it's a hostile place to live. But half a million years ago, the elements began carving out a stretch of rich grassland that brims with life every spring and summer. Join us as we meet the unique cast of characters that inhabit this boomtown, such as American bison, cliff swallows, and the bustling prairie dog.