Frank Sulloway's research indicates that elder siblings have a greater chance of being the smarter sibling. As the youngest of 11, Stephen takes issue with that. (4:28)
Daniel Gilbert talks about his new book and tells Stephen that money doesn't buy happiness, kids are a pain in the ass and marriage and religion will make you happy. (5:55)
Dr. Jerome Groopman discusses "How Doctors Think" and explains that Dr. Gregory House is based on Sherlock Holmes, who was addicted to cocaine, not heroine. (6:07)
Daniel Pinchbeck believes the Mayan god Quetzalcoatl is making a comeback. Stephen wants to know who he is and why we should be excited about him. (6:15)
Marvel Comics editor-in-chief Joe Quesada discusses a new series of comics entitled Civil War, which combines superheroes with today's government. (5:47)