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Oct 27, 2026, 7:39 am114 pts
Mongabay
For 20 years, researchers snorkeled through rivers across the southern U.S., feeling along muddy bottoms for mussels. Many of the shells they pulled up looked like familiar species, but their DNA told a different story. Scientists from Shedd Aquarium, Arkansas State University, and the U.S. Geological Survey…
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