Study: Contaminent levels high in parks
By MATTHEW BROWN, Associated Press Writer
Wed Feb 27, 5:41 PM ET
The substances detected ranged from mercury produced by power plants and industrial chemicals such as PCBs to the banned insecticides dieldrin and DDT. Those can cause health problems in humans including nervous system damage, dampened immune system responses and lowered reproductive success.
Contaminants that accumulated in fish exceeded human consumption thresholds at the eight parks that researchers focussed on most: Sequoia and Kings Canyon, Mount Rainier, Olympic, Glacier, Rocky Mountain, Gates of the Arctic and Denali national parks and Alaska's Noatak National Preserve.
A parks advocacy group called the federal report "a wake-up call" that should mobilize Congress to take a tougher stance on air pollution.
The study also included researchers from the U.S. Geological Survey and the U.S. Forest Service.
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