NOVA

Day the Dinosaurs Died

Season 44 Episode 21 | 53m 14s | Video has closed captioning.

66 million years ago, a seven-mile-wide asteroid collided with Earth, triggering a chain of events that coincide with the end of the dinosaurs. But experts have long debated exactly what happened when the asteroid struck and how the giant beasts met their end. Now, scientists have uncovered compelling new clues about the catastrophe.

Aired: 12/06/17

Expired: 12/26/20

Rating: TV-PG

Problems Playing Video? | Closed Captioning

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