Word: cfc
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There is only one problem. When they escape into the atmosphere, most CFCs are murder on the environment. Each CFC molecule is 20,000 times as efficient at trapping heat as is a molecule of CO2. So CFCs increase the greenhouse effect far out of proportion to their concentration...
...more immediate concern is that the chlorine released when CFC molecules break up destroys ozone molecules. The ozone layer, located in the stratosphere, between 10 and 30 miles up, is vital to the well being of plants and animals. Ozone molecules, which consist of three oxygen atoms, absorb most of the ultraviolet radiation that comes from the sun. And ultraviolet is extremely dangerous to life on earth...
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...
...choice groups, the Coalition to Defend Abortion Rights (CDAR), which includes several Harvard students, and the Coalition for Choice (CFC), have organized counter-protests in the Boston area for Saturday...
...that do not harm the ozone become available, the prices of the chemicals may surge because of limited supplies. Recognizing that possibility, the EPA has asked for public comment on two ways of preventing producers from making excessive profits. One proposal calls for a special tax on earnings from CFC and halon sales, the other for the Government to auction off manufacturing rights, making a company pay for the privilege of producing the chemicals...