Search Results: "Calcite"

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• 01:55 Popular

  Exploring Super-Remote Caves In Greenland: #bestjobever

  701 views / 2 likes - added 8 years ago

  Gina Moseley loves caves. She started caving for sport when she was 13 years old, and now she’s in it for science. Moseley is a geologist and National Geographic grantee who traveled to a remote region of northeast Greenland to conduct climate-change rese

• 04:24

  How Seashells Are Made

  552 views / 0 likes - added 5 years ago

  Learn more about CuriosityStream at https://curiositystream.com/reactions (CODE: reactions) If you know that seashells are made of basically the same stuff as chalk, you might have wondered why chalk is crumbly but seashells are super tough. This week on

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