Season 33, Episode 13 Mystery of the Megavolcano
First Aired: September 26, 2006
A look at a “supervolcano” that erupted some 74,000 years ago in Sumatra and may have precipitated a global deep freeze. Scientists examine evidence in Greenland's ice cap, from beneath the ocean floor and in ash recovered from across southern Asia.
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- Premiered: March 3, 1974
- Rating: None
- Premise: PBS's premier science-documentary series, which has won six Peabody Awards and more than 20 Emmys (four in 2002 alone) since its 1974 debut. `Nova' clearly, and often engagingly, `demystifies' a vast range of science, technology and history topics---past a… (more)
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A lot has changed in 20 years.