Day the Dinosaurs Died
Season 44 Episode 21 | 53m 30s
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.
Expired: 02/13/19Video has closed captioning.
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A team drills into the crater made by the asteroid that may have wiped out the dinosaurs.
Meet Spinosaurus—the lost killer of the Cretaceous.
How did massive volcanic eruptions, inland seas, and land bridges pave the way for life?
NASA's Don Yeomans answers questions about Apophis and the asteroid threat in general.