Word: cfcs
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...airy, daylight-filled office space not only uses 61% less energy and 68% less electricity than it did before the renovation -- saving an estimated $100,000 a year, but it also recycles 80% of all office waste, including 42 tons of paper annually; cools its air without ozone-depleting CFCs; and employs environmentally benign and recycled construction materials throughout -- not to mention the 300 tons of steel, 9,000 tons of masonry and 560 tons of concrete that Audubon preserved by reusing the original structure...
...negative effect of a loss of tropospheric ozone can be illustrated by the present trend to phase out chloroflorocarbons (CFCs), present in aerosols and Styrofoam, and replace them with hydrochloroflorocarbons, (HCFCs...
...CFCs, which destroy stratospheric ozone, are going out, and HCFCs are coming in," Jacob says. "The HCFCs won't break down the ozone in the stratosphere, because they can be oxidized in the troposphere...
Similarly, the Montreal Protocol to protect the ozone layer is often trotted out as an example of how the international community successfully came to grips with a dire threat. Unfortunately, the protocol is not a success for the ozone layer, which will continue to deteriorate as CFCs manufactured during years of international temporizing wander upward to the stratosphere like leisurely assassins. Bush ridiculed this threat during the '92 campaign, calling Gore "Ozone Man," but in fact the loss of the world's upper atmospheric shield is one environmental threat that has people genuinely scared...
...vanishing even faster than predicted. That warning from scientists has led 93 nations to agree to speed up phasing out use of chemicals that destroy the atmospheric shield. Updating the timetable known as the Montreal Protocol, delegates at a United Nations conference in Copenhagen moved up elimination of chlorofluorocarbons (CFCs) and carbon tetrachloride to 1996, four years ahead of schedule. Halons and methyl chloroform will be banned earlier too, in 1994 and 1996, respectively. Researchers forecast more skin cancer as the ozone layer disappears...