Mooneye, sturgeon and microplastics in trout

In the swiftly flowing waters of the St. Croix River, a federally endangered species of mussel called the spectaclecase shelters among boulders on patches of gravel and sand. It’s not easy to make babies when you’re spectaclecase. First, the male must release sperm into the river current, hopefully upstream of a lady mussel. If a…

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