Episode: 1154 In which Adam's navel poses the question of pre-creation history. Today, a silly question about Adam's navel paves the way for evolution.
Episode: 1148 1846: Origin of the Smithsonian Institution in a momentous year. Today, let's talk about American expansion, and the Smithsonian Institution.
Episode: 1950 Girolamo Cardano: The tormented life of a towering renaissance thinker. Today, guest scientist Andrew Boyd shares a story of triumph and tragedy.