Dan talks to Professor Jon T Coleman to discuss Hugh Glass and the real story that formed the basis for the 2015 film, 'The Revenant.'Jon T. Coleman is a professor of history at the University of Notre Dame. His books and teaching span colonial and contemporary America and integrate social, cultural, and environmental approaches. He is the author of Vicious: Wolves and Men in America and Here Lies Hugh Glass: a Bear, a Mountain Man, and the Rise of the American Nation.Thumbnail image credit: John Lee Lopez / Commons.