
Originally Posted by
kmiller1610
Well it's a bit hard to know whom to believe. The global warming crisis thing is based on the idea that a non-pollutant (Co2) is driving up the world's temperature and that we are responsible. Yet the man made portion is only .0016% of the earth's atmosphere.
Persistent pollutants from man are a much smaller portion. Those that are toxic are a real concern, but my guess is that if you don't have a landscape that traps and concentrates them that they are dissipated. So the cities are the greatest concern.
In the garage, the car's exhaust in the closed space would far exceed those percentages in a matter of minutes.
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