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Chlorofluorocarbon
Findings could make a major contribution to protecting the endangered ozone layer
New ozone-destroying gases on the rise
A New Approach to SETI: Targeting Alien Polluters
Count of new CFCs in the atmosphere rises from four to seven
Global warming caused by CFCs, not carbon dioxide, study says
CFC Substitutes: Good for the Ozone Layer, Bad for Climate?
Robots Extract Coolant From Old Refrigerators
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