Philosophers and physicists discuss the profound question of why there is something instead of nothing, exploring ideas like necessary existence, the role of value, consciousness creating the universe, and ultimate explanations like theism and materialism. Guests include John Leslie, Bede Rundle, Max Tegmark, Simon Blackburn, Quentin Smith, Victor Stenger, Peter van Inwagen, John Polkinghorne, Richard Swinburne, and Paul Davies.