Terry Gross

Puzo's new novel is "The Last Don." He is best known for "The Godfather." This new book returns him to that genre: the inner workings of the Mafia. The main character is an old man trying to secure his family's future in an era of legalized gambling, motion picture investments and the threat of government informers. His goal is threatened by familial in-fighting. The two-time Academy Award winner has also written several screenplays, including are all three Godfathers and Superman I and II.

An update on the investigation of mass graves in Srebrenica. On July 8, a six-member forensic team, coordinated and sponsored by Physicians for Human Rights, began exhuming the graves. Terry Gross talks to Dr. William Haglund, who is in Bosnia. As the lead forensic anthropologist for PHR, he and the other members of his team are working to identify bodies. Haglund is the former Chief Medical Investigator for King County, Washington and an assistant professor of anthropology at the University of Washington.

Doctor of psychology and director of a sleep disorder clinic in San Diego, Sonia Ancoli-Israel. Her new book, "All I Want Is A Good Night's Sleep" addresses both sleep and the full range of sleep disorders, with advice on how to improve everyday sleep and how to overcome chronic sleep problems. Jet lag, snoring, sleepwalking and talking, and insomnia are all addressed.