The Nation - News from Aug. 2, 1987

Acid rain is the No. 1 threat to the country’s national parks and is so serious that, in the waters of one park, freshly stocked brook trout survived only two days, a conservation group said. The National Parks and Conservation Assn. said there is insufficient monitoring of acid rain deposits by the National Park Service. At the 27 sites where there is monitoring, the group reported, levels of acid deposits have been found that could cause “irreversible damage” to water, soil, plant and animal life. “The parks are symbols of what’s happening to the rest of the environment,” association President Paul Pritchard said.