The New $pace Race / Closing Gitmo

S4, E18: A new era of manned spaceflight is dawning--and this time, the destination is Mars. Thomas Morton reports on the preparations for humanity's next great adventure. The American prison at Guantanamo Bay, Cuba, is one of the most controversial issues of the post-9/11 era. Gianna Toboni looks to find out what really happens behind the camp's walls.