Science: Ozone Alert

A large part of the controversy over the British-French Concorde arises from concern about the big jets' effect on the ozone layer, which protects life on earth from lethal doses of ultraviolet light. Laboratory tests and chemical theory have shown that the nitrogen oxides given off by jet engines destroy ozone. Do nitrogen oxides have the same effect in the stratosphere? A Dutch meteorologist working at Boulder, Colo., reports there is now evidence that the answer is yes.

Paul Crutzen and associates at the National Oceanic and Atmospheric Administration (NOAA) and the National Center for Atmospheric Research (NCAR) have long theorized...

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