Climate Sewage River Impact
John Roland Elliott, a volunteer with the Mystic River Watershed Association, collects a water sample from the Alewife Brook between near Arlington, Mass., Wednesday, April 15, 2026. (Lucie McCormick/MIT Graduate Program in Science Writing via AP)
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John Roland Elliott, a volunteer with the Mystic River Watershed Association, collects a water sample from the Alewife Brook between near Arlington, Mass., Wednesday, April 15, 2026. (Lucie McCormick/MIT Graduate Program in Science Writing via AP)