Christopher Hill; Alan Alda; Remembering Herbert Muschamp

Assistant Secretary of State for the U.S. State Department Christopher Hill reports on the negotiations to shut down nuclear facilities in North Korea. Alan Alda talks to Charlie about the near-death experience that changed his life, the importance of art, and the challenge of writing. In tribute to Herbert Muschamp, the architecture critic for The New York Times, we replay clips in which Muschamp talks about architecture, design, and Frank Lloyd Wright.