Three noted scholars talk about justice. Nobel Prize-winner Amartya Sen, in The Idea of Justice, writes about how to achieve social justice in a world where cultures have widely differing beliefs. Michael Sandel, one of Harvard’s most popular professors, teaches that right and wrong are not black and white in Justice. Dambisa Moyo, who rocked the development world with her book Dead Aid, asks what is just for Africa. Hosted by Current TV’s Joel Hyatt. Sponsored by Liberty Mutual.