Nearly 8,000-year-old skull found in Minnesota River

A partial skull that was discovered last summer by two kayakers in Minnesota will be returned to Native American officials after investigations determined it was about 8,000 years old.

Freshwater mussels can inhibit bacterial diseases

Researchers from the University of Jyväskylä found brown trout better survived a Flavobacterium disease outbreak if the fish had larvae of freshwater pearl mussel in their gills. In another study, duck mussels were observed ...

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