Two rival theories explain how the world works. But is either true - or plausible? Gunnar Pettersson enlists historians and others involved in conspiracy-theory research to help unravel the arguments. Producer Julian Hale
Discover 11,128,835 listings and 282,102 playable programmes from the BBC
Two rival theories explain how the world works. But is either true - or plausible? Gunnar Pettersson enlists historians and others involved in conspiracy-theory research to help unravel the arguments. Producer Julian Hale