Okay simpleton question. Maybe one of the science types or experts can answer it for a laymoron like me.
Where does all the smoke go? You know, smoke from cars, powerplants, furnaces, that smoke. Where does it and all the stuff it carries end up? As far as I know there ain't no big old chimney up there somewhere so it seems like it must stick around in some form or other. Forget global warming, that just can't be good for us.
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