Objective Proficiency p 103. The Search for What Killed the Dinosaurs. Extra Listening

What really wiped the dinosaurs off the face of the planet? What does the answer to this question tell us about our own future on Earth?
Mass-extinction theories began around 200 years ago with the work of French scientist Georges Cuvier, who developed the idea that catastrophic natural events were responsible for the extinction of early species of life on Earth—including dinosaurs.