Modern Marvels

Season 11 Episode 75

More Doomsday Tech

0
Aired Wednesday 10:00 PM Dec 28, 2004 on The History Channel

Trivia

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  • Trivia

    • The greatest mass extinction ever, the Permian-Triassic-or "Great Dying"-wiped out nearly all life on Earth 250 million years ago. Recent evidence, while sparse, suggest a giant asteroid as the cause.

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