Would it be possible to tune commercial jet engines to emit ozone and replenish the ozone layer?
There doesn't seem to be a problem with a "rapidly depleting ozone layer" anymore.
Probably not, since the main purpose of the engines is to consume oxygen during combustion to produce the thrust. Plus, ozone is reactive and engines are hot...
Problems tend to get more press than solutions, so a lot of people don't know that. It is just now starting to regenerate, as CFCs have been all but phased out.
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