Tim Berners-Lee; 'The Kindness of Strangers'; Ed Koch

Tim Berners-Lee talks about his book, "Weaving the Web: The Original Design and Ultimate Destiny of the World Wide Web by Its Inventor." Producers Maro Chermayeff and James Redford talks about organ transplant awareness and their documentary, "The Kindness of Strangers." Former New York mayor Ed Koch on his latest book, "Giuliani: Nasty Man."