Almost 13,000 years ago, North America underwent drastic changes at a rapid rate. Mammoths, mastodons, giant ground sloths, and many other large animals went extinct. Around the same time, the Clovis ...
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Did a space blast wipe out mammoths and humans too?
Something extraordinary happened near the end of the last Ice Age, when mammoths still roamed and early hunter gatherers were spreading across new continents. A growing group of researchers now argues ...
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