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What really killed the dinosaurs? (It wasn’t just the asteroid) - Sean P. S. Gulick

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3,352 Questions Answered

TEDEd Animation

Let’s Begin…

Sixty-six million years ago, near what’s now the Yucatán Peninsula, a juvenile sauropod feasted on horsetail plants on a riverbank. Earth was a tropical planet. Behemoth and tiny dinosaurs alike soared its skies and roamed its lands while reptiles and tentacled ammonites swept its seas. But, in an instant, everything would change. Sean P. S. Gulick details one of Earth's most devastating periods.

How many millions of years ago did the Chicxulub asteroid impact happen, causing the extinction of all non-avian dinosaurs?

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Meet The Creators

  • Educator Sean P. S. Gulick
  • Director Jeff Le Bars, Jet Propulsion
  • Narrator Adrian Dannatt
  • Music Stephen LaRosa
  • Sound Designer and Mixer Weston Fonger
  • Director of Production Gerta Xhelo
  • Producer Sazia Afrin
  • Editorial Director Alex Rosenthal
  • Editorial Producer Cella Wright
  • Fact-Checker Paige Downie

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