Sand is the most mined resource in the world. But extracting it from lakes and rivers comes at a deadly cost — and could have dire consequences for the environment.
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Correction: An earlier version of this story misstated the amount of feed Acipenser produces each month. It is about 60 metric tons per month, not kilograms. Business Insider also misstated that Acipenser released male Sturgeon into Lake Mantasoa. This has been removed.