The Lemelson MIT Prize recognizes inventors whose designs improve lives. This year's winner, Ashok Gadgil, helped bring light to 100 million people in the developing world, designed fuel-efficient cook stoves and created a simple way to purify water.
The film "Pray the Devil Back to Hell" documents the story of a group of women who organized protests for peace aimed at ending Liberia's nearly 20-year civil war. Leymah Gbowee was the driving force behind the movement.
Today's Geo Quiz is about money. We Americans aren't feeling very wealthy right now. Most of us are a lot wealthier still than most of the world's 6.8 billion people. Most of them are poor. We want to know which are the 5 poorest countries of the world?
Immigration will be a major point of discussion for the new Congress. Correspondent Deepa Fernandes looks at how the African nation of Liberia has been treating, and often imprisoning, some people deported from the US.