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Scientists trying to solve mystery of ‘rock snot’ in Michigan streams

Source: Courtesy of Grace Lahti/University of Michigan

7 min read

Scientists trying to solve mystery of ‘rock snot’ in Michigan streams

Didymosphenia geminata is a microscopic, single-celled algae that clings to the rocks lining riverbeds and lakebeds. 

Jan 28, 2026, 9:38 AM CST

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