World’s Strangest

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Hudson River Fish Evolve Incredibly Quickly

Fish in the Hudson River (US) have developed an immunity to polychlorinated biphenyls, a type of toxic chemicals developed in 1929. They’ve done so at an amazing speed: “This is very, very ra­­­­­­­­­­­­pid evolutionary change,” said Isaac Wirgin, an environmental toxicologist at New York University’s School of Medicine, and the study’s lead investigator. “Normally you think [...]