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S33: Mystery of the Megavolcano - Preview

  • Aired: 12/14/2011
  • 00:30
  • Rating: NR
Watch as NOVA pieces together clues about a volcanic cataclysm and probes questions about human evolution and Earth's fragile ecosystems. 12/14/2011
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S33: Mystery of the Megavolcano - Preview
S33: Mystery of the Megavolcano - Preview
Airs Wednesday, December 14, 2011 at 10:00 p.m. ET/PT. Check your local listings.
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