Jack Szostak, who just shared the 2009 Nobel Prize in Physiology or Medicine, talks about his latest research on the origin of life. And Scientific American editor George Musser talks to Jonathan Mostow, director of the new Bruce Willis sci-fi thriller Surrogates. Web sites related to this episode include www.snipurl.com/surrogates; www.snipurl.com/telomere; www.snipurl.com/origin