To: Ben Ficklin
There has always been smog. That is why the Smokey Mountain are called smokey. And, that was before there was industrialization.
19 posted on
05/23/2015 10:57:35 AM PDT by
Parmy
To: Parmy
It is NOx that comes out of a tailpipe or a smoke stack that reacts with VOCs, in the presence of sunlight, to create ground level ozone.
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