How Sewage Plants Hurt Fish, And How They Can Help

Deformities linked to estrogen-like chemicals decreased dramatically in fish after a wastewatertreatment plant in Canada got anupgrade. (Shutterstock) Something strange has been happening to fish in Ontario’s Grand River, which drains into Lake Erie. Male rainbow darters—colorful fish a few inches long—are growing eggs in their sex organs. The condition, called intersex, […]

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