8. Gitmo; The Giving Pledge; The Recyclers

First, Lesley Stahl gets a rare view inside Gitmo where 164 accused terrorists have been locked up, most for 11 years without charge or trial; then, the billionaires club. Membership comes with two requirements: be worth at least a billion dollars and be willing to give half of that away; lastly, residents of Cateura, Paraguay, turn trash into triumph by creating the Recycled Orchestra.