34 minutes | Monday, 31 August 2026
In 1908, in the remote forests of Siberia, there was a giant explosion and bright lights were seen in the sky. Was this an asteroid or a comet crashing to earth? Or could it have been an alien spacecraft – or even a human experiment gone horribly wrong? In this episode of History’s Greatest Conspiracy Theories, environmental historian Andy Bruno joins Rob Attar to explore the debates that still surround the mysterious Tunguska event.
History’s Greatest Conspiracy Theories is produced by the team behind History Extra. For more fascinating stories from the past, head to HistoryExtra, the home of ‘History’s Greatest’ podcasts. There you can find other feeds including History’s Greatest Cities and HistoryExtra LongReads. Find out more at historyextra.com/podcast.
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