Mineral
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Newyork
We Can Buy Sustainable Food. Why Can’t We Buy Sustainable Batteries?
Seventy years ago, the United States was the world’s leading producer of fluorite, a brilliantly multicolored mineral essential to industries such as steel. But the last American fluorite mine closed nearly 30 years ago, unable to compete with ...
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Newyork
Are You Wearing Sunscreen the Right Way?
And other essential questions about protecting your skin from the sun, answered by experts.