In this episode
The true story of the dinosaur extinction for kids: how an asteroid about 10 kilometres wide hit what is now Mexico 66 million years ago, and how scientists Luis and Walter Alvarez worked it out.
• How a thin layer of a rare metal called iridium gave the secret away
• How dust blocked out the sun and broke the food chain
• Which animals survived, and why birds count as dinosaurs
• Quiz questions to answer along the way
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