On this edition of Conversations, Claudia Kalb talks with host Dan Skinner about “Spark: How Genius Ignites, From Child Prodigies to Late Bloomers." Kalb is an award-winning author and journalist who reports on health, science, and human behavior. She is the author of the New York Times bestseller “Andy Warhol Was a Hoarder: Inside the Minds of History’s Great Personalities” as well as a series of cover stories for National Geographic on the origins of genius.