SciShow

SciShow

Mass Extinctions (2012x73)


: 21, 2012

Hank takes us on a trip through time to revisit the 5 major mass extinction events that have impacted species over the Earth's history, and leaves us with some thoughts about what could possibly be the sixth event - the one caused by human activities.

  • : 2012
  • : 3680
  • : 2
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