Francis Collins; Stanley Hoffmann; Paul Berman

Geneticist Francis Collins of National Human Genome Research Institute reports that the institute has been successful in mapping the human genome sequence. Harvard University history professor Stanley Hoffmann explains the importance of examining our history and looking toward the future with wisdom in light of the Iraq war. Journalist and author Paul Berman shares his new book, "Terror and Liberalism," which was recently recommended by Richard Holbrooke.