🔬 Science · Dinosaurs & Paleontology
Mass Extinctions in Earth History
Compare the five major mass extinction events in Earth history (End-Ordovician, Late Devonian, End-Permian, End-Triassic, K-Pg), describe proposed kill mechanisms for each (glaciation, oceanic anoxia, volcanic mega-eruptions, asteroid impact), and explain why mass extinctions, while catastrophic, also open ecological space for subsequent evolutionary radiations
Typical age: 12–14 years
“Can your child explain that the asteroid that wiped out the dinosaurs was actually the fifth mass extinction in Earth history — and describe what happened in the worst one, which killed over 90% of all species?”
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