Bradley; Montagnier; Gordon-Reed

Former New Jersey Senator Bill Bradley on his career and new role as a CBS News correspondent. Luc Montagnier reflects on his discovery of the AIDS virus and explains why he is leaving France to direct a new research center for Queens College in New York. Annette Gordon-Reed tackles the debate over whether Thomas Jefferson fathered two illegitimate sons with his slave, Sally Hemings, in "Thomas Jefferson and Sally Hemings: An American Controversy."