60 Minutes — Episode 24: Survivors' Network, Pleistocene Park, The Rock

You are watching the episode Survivors' Network, Pleistocene Park, The Rock Parents of a 2012 Aurora, Colorado shooting victim travel the country to help others impacted by mass shootings; then, Siberia's Pleistocene Park: Bringing back pieces of the Ice Age to combat climate change; and, a German-style program at a Connecticut maximum security prison emphasizes rehab for inmates