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Fun Facts Saturday: Geology and the Golden Gate Bridge

Editor's Note: This is a new column wherein we explore a history-making moment and its connection to geology. By Antoinette Rahn Eighty-six years ago today (Jan....

5 Five Fascinating Facts: Chalcopyrite

Note: This is the first installment of my new blog, Common Ground. A few times a week I'll use this space to share my...

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