In Our Time: The Manhattan Project

Before the Second World War, scientists in Germany had discovered the potential of nuclear fission and scientists in Britain soon argued that this could be used to make an atom bomb, against which there could be no defence other than to own one. The fear among the Allies was that, with its head start, Germany might develop the bomb first and, unmatched, use it on its enemies. Melvyn Bragg and guests discuss the race to build such a weapon first