Word: sprayed
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Dates: during 1980-1989
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...long been able to claim the moral high ground in the campaign to stamp out chlorofluorocarbons, the chemicals that destroy the atmosphere's protective ozone layer. After all, America banned CFCs from spray cans more than a decade ago. And U.S. manufacturers are among the world's leaders in finding environmentally acceptable substitutes for CFCs, which are used as coolants and blowing agents for making plastic foam...
...magnolia-lined grounds of the University of Mississippi last August, arsonists torched the first black fraternity house before its members had even moved in. At Memphis State University last fall, the Jewish Student Union was spray-painted with swastikas. Gay men and lesbians at the University of Texas at Austin have been pelted with rocks and beer bottles while participating in campus parades. At Temple University in Philadelphia, 130 undergraduates have formed a White Students Union dedicated to fighting affirmative-action programs and promoting "white pride...
...revealed that federal weapons-making plants had recklessly and secretly littered large areas with radioactive waste. The further depletion of the atmosphere's ozone layer, which helps block cancer-causing ultraviolet rays, testified to the continued overuse of atmosphere-destroying chlorofluorocarbons emanating from such sources as spray cans and air- conditioners. Perhaps most ominous of all, the destruction of the tropical forests, home to at least half the earth's plant and animal species, continued at a rate equal to one football field a second...
...CFCs % for short) seemed too good to be true. These remarkable chemicals, consisting of chlorine, fluorine and carbon atoms, are nontoxic and inert, meaning they do not combine easily with other substances. Because they vaporize at low temperatures, CFCs are perfect as coolants in refrigerators and propellant gases for spray cans. Since CFCs are good insulators, they are standard ingredients in plastic-foam materials like Styrofoam. Best of all, the most commonly used CFCs are simple, and therefore cheap, to manufacture...
When scientists first warned in the 1970s that CFCs could attack ozone, the U.S. responded by banning their use in spray cans. (Manufacturers switched to such environmentally benign substitutes as butane, the chemical burned in cigarette lighters.) But the rest of the world continued to use CFC-based aerosol cans, and overall CFC production kept growing. The threat became far clearer in 1985, when researchers reported a "hole" in the ozone layer over Antarctica. Although the size of the hole varies with the seasons and weather patterns, at times Antarctic ozone has been depleted by as much...