The Infinite Monkey Cage teleports to California for this special episode recorded at NASA's Jet Propulsion Laboratory. They are joined by comedian and talk-show host Conan O'Brien, alongside JPL's Dr Katie Stack Morgan and Dr Kevin Hand, and discuss the incredible missions that are hunting for signs of life within our own solar system. From the iconic Mars Rovers currently exploring the martian surface, to amazing future missions to Jupiter's icy moon Europa, the panel discuss the tantalising prospect of finding signs of life this close to home, and the incredible engineering and ingenuity that goes into planning these missions. Producer: Alexandra Feachem