Scientific concern about the future of man's fragile environment has ranged from pollution of the oceans and the air to radioactive contamination in a nuclear war. Now researchers are turning their attention to the atmosphere's ozone layer, which protects all life below from a lethal overdose of the sun's ultraviolet light. Their ominous findings: the vital blanket of gas is so fragile that it might well be severely damaged or destroyed by large-scale atmospheric nuclear tests, to say nothing of military and civilian supersonic aircraft, and even the widespread use of aerosol sprays.
Ozone is a form of oxygen that has three...
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