Nick Longrich/The Conversation
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![Mass extinctions made life on Earth more diverse—and might again](https://www.popsci.com/wp-content/uploads/2019/09/16/AEOIIYLRZ52S4VSDEWQF2GAXSI.jpg?w=675)
Climate Change
Mass extinctions made life on Earth more diverse—and might again Mass extinctions made life on Earth more diverse—and might again
By Nick Longrich/The Conversation
September 17, 2019