Tiny Mussels Invade Great Lakes, Threaten Fishing Industry
Tiny mussels are invading the Great Lakes, threatening the health of the waterways and the livelihoods of fishermen. Ash-har Quraishi of WTTW Chicago reports.
Tags: waterway, ships, chicago, hour, pbsnews, wttw, boats, great lakes, mussels, ash-har quraishi
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