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Published in 2014
Learn how experts joined forces to figure out what happened at the end of the Cretaceous, 66 million years ago. Meet Dr. Kirk Johnson, a paleobotanist and Sant Director of the National Museum of Natural History. While you may know about the extinction of large dinosaurs, you might not realize that...
Grade Level   6 7 8
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The Volcanoes of the World database provides a catalog of Holocene and Pleistocene volcanoes, and eruptions from the past 10,000 years.
Grade Level   9 10 11 12
Geoscience Organizations Organizations
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