Science
Uncovering the secrets behind Earth’s first major mass extinction – Newswise
We all know that the dinosaurs died in a mass extinction. But did you know that there were other mass extinctions?

Newswise — We all know that the dinosaurs died in a mass extinction. But did you know that there were other mass extinctions? There are five most significant mass extinctions, known as the “big five,” where at least three-quarters of all species in existence…
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