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Dinosaurs -- Extinction  

National Geographic Documentaries 24 Hours After: Asteroid Impact

Sixty six million years ago a meteor struck the Earth, wiping out three-quarters of all life on the planet and helping clear the way for the rise of mammals. Recent scientific investigations have made it possible to understand more precisely what likely happened and how, as the cosmic impact unleashed cataclysmic forces. Why did some creatures survive while nearly all ...
  • 2009
  • 00:45:10
  • 9-12
  • Added on: 01/04/2016

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