Study: Contaminant Levels High in Parks
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BILLINGS, Mont. — Pesticides, heavy metals and other airborne contaminants are raining down on national parks across the West and Alaska, turning up at sometimes dangerously high levels in lakes, plants and fish.
A sweeping, six-year federal study released Tuesday found evidence of 70 contaminants in 20 national parks and monuments – from Denali in Alaska and Glacier in Montana, to Big Bend in Texas and Yosemite in California.