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NOVA
S39 Ep10: Deadliest Tornadoes
- Aired: 04/10/2012
- 52:52
- Expires: 12/15/2015
- Rating: TV-PG


LEARN MORE
Hunt for the Supertwister
Tornado-chasing scientists with an eye to better forecasting plumb the secrets of nature's most terrifying killer.
Rate Tornado Damage
Use the Fujita Scale of tornado intensity to assess the level of destruction left in the wake of actual tornadoes.
Tornado Country
How is it that with nearly 200 nations in the world, just one—the U.S.—gets up to three-quarters of all tornadoes?
Killer Tornado of 1928
The remarkable story of 17-year-old Dale Larson and 29 Nebraskan schoolchildren shows how far tornado warning has come.
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