Season 29, Episode 16 Why the Towers Fell

First Aired: April 30, 2002

Forensic engineers speculate on “Why the Towers Fell” in this report based on an American Society of Civil Engineers study of the World Trade Center collapse. Also included: animated reconstructions of the collapses; comments by Leslie Robertson, the lead structural engineer on the WTC design; and eyewitness accounts. Says one survivor of the South Tower collapse: “It was my idea of what a nuclear winter would [be] like.” Will Lyman narrates.

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  • Premiered: March 3, 1974
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  • 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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