It's time we stopped trashing our parks, says the National Park Service, so recycling programs have been introduced at three sites -- Acadia (Maine), the Great Smoky Mountains (Tennessee) and the Grand Canyon. Yosemite will join them in early 1991, as soon as the bear-proof trash cans are developed.
With 20 million visitors a year, landfills at the four parks are perilously close to topping off, and officials anticipate that recycling of plastic, glass and aluminum will reduce landfill waste by 25 percent.
"Recycling: It's as easy as a walk in the park," is the slogan of the park-service program, which provides campers with special sacks for recycling and adds receptacles for plastics, glass and aluminum to the existing containers for paper and waste.
Salvaged plastic will be returned to the parks as picnic tables, park benches, signs -- and more garbage cans.