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Cross Section: Hiranya Peiris – Science Weekly podcast
What happened before the Big Bang? This is one of the hardest questions scientists are trying to answer, but Prof Hiranya Peiris is not daunted by the challenge. Hannah Devlin invited Peiris on the podcast to discuss the origins of our universe. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>