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Dinosaur Plague

Insects caught in amber spark a controversial theory about what killed the dinosaurs.
Publish Date: Topic: NatureNature

(This video is no longer available for streaming.) What killed off the dinosaurs? Over the years, experts have suggested everything from global climate change to a spate of massive volcanic eruptions to the most widely accepted culprit: an asteroid that unleashed global devastation. But as correspondent Chad Cohen reports, some scientists believe the giant reptiles might have been taken down by something almost too tiny to see.

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