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Martin Rees, Neil Turok and Bernard Carr

Universe or Multiverse?

Hay Festival 2007 , 
The pre-eminent astronomers and cosmologists discuss how recent developments in cosmology and particle physics have led to the remarkable realization that our universe – rather than being unique – could be just one of many universes. This multiverse proposal may explain the fine-tunings which appear necessary for the emergence of life, as well as the origin of our universe. Chaired by science broadcaster Quentin Cooper.