Quote:
Originally Posted by jamesqf
It's 'historic' in the sense that it derives from the urban air pollution problems of the '60s and '70s. Today we know that CO2 is the far greater problem, and affects everyone, not just urbanites.
Then don't live in or near a city.
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And your statements assume smog stays put. Why don't you make mention of the bodies of water turned acidic by the precipitation of NOx? Many of them were miles down wind from the NOx source.
And, many valley centers are affected by city emissions by virtue of geography. Controlling the air quality within an area means controlling "visiting" pollution sources - vehicles. The cost to police each vehicle is prohibitive and thus it is easier and much more economical to make each vehicle emissions compliant across the whole country.
The problem of pollution is a large and complex animal and your sweeping statements don't begin to cover it.