The key to saving humanity

Guest host Sam Sacks is in for Thom Hartmann tonight to discuss Stephen Hawking’s key to saving humanity, the latest from the Arkansas tar sands oil spill, and how even Republicans are against cutting Social Security – all that and more in tonight’s 'Big Picture Rumble.' In tonight's 'Conversations with Great Minds,' Thom talks with Trevor Aaronson, author of the new book 'The Terror Factory: Inside the FBI's Manufactured War on Terrorism.'