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Q&A Could a large scale Tunguska air burst cause a mass extinction?

Some Background Details In 1908, the Siberian region of Tunguska made headline news when an explosion knocked down 80 million trees in an area of only 770 square miles. The mystery was that there ...

4 answers  ·  posted 8y ago by Uncle Tres‭  ·  last activity 8y ago by Uncle Tres‭

Question reality-check apocalypse extinction