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It seems like trees caused a mass extinction
When it comes to mass extinctions, you probably imagine giant volcanic eruptions or asteroids raining fire from the sky, but sometimes these events can have some unexpected causes. Hosted by: Michael ...
Smithsonian Magazine on MSN
A fossil trove in China provides a rare window into a mass extinction event that happened more than 500 million years ago
When considering mass extinctions, people often think of the asteroid strike that wiped out all non-avian dinosaurs. But life ...
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