Scientists in Action: The Demise of Dinosaurs & Expansion of Mammals

Sixty-six million years ago, life on earth had a catastrophically bad day. Following the impact of an asteroid six miles in diameter, non-avian dinosaurs and countless other critters were wiped from the face of the planet. For survivors, life shortly after was grim, but in the wake of the destruction, some species eventually flourished. What was the world and life like after the asteroid? How does one remarkable location in Colorado help scientists Dr. Tyler Lyson and Dr. Gussie Maccracken understand earth’s greatest comeback story?  

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