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How the Earth Works

Asteroid Armageddon

Season 1 Episode 6
Martin and Liz investigate a giant asteroid impact that may have wiped out the Dinosaurs 65 million years ago. Martin experiences the power of a NASA supergun and Liz follows the geological clues to Mexico where she dives an underground river.
  • 44 min
  • TV-PG
  • Premiered 10/16/2013