Pulitzer Prize-winner Katherine Boo discusses the lives of people striving for a better life in a slum of Mumbai, India. Director Joshua Marston is joined by the screenwriter and two of the young actors of the new film The Forgiveness of Blood, about a family feud in Albania. The latest installment of A History of the World in 100 Objects looks at the Rosetta Stone. Plus, our latest Underreported segment looks at the potential of using thorium as a nuclear fuel.