Doris Lessing's unfinished business with 'Ben in the World'

Ray Suarez interviews Doris Lessing about "Ben in the World," a science fiction novel that continues the story of a young man striking out on his own path, even though he's incapable of coping with the modern world. As this is the sequel to her 1988 novel, "The Fifth Child," Lessing tells Suarez what compelled her take up Ben's story again, more than a decade after the first book.