AuntyM,

Seriously, which side are you on? Of COURSE I want 365 good days. The point is the improvement is due to people supporting governmental regulation and action on air quality. Those regulations raised the cost of manufacturing cars (catalytic converters are not free, e.g.) but got you 4x as many days with good air quality right here in town.

What I would suggest we all do as individuals is support (or at least stop actively obstructing) efforts to do similar work on greenhouse gas emissions. I don't care if it's cap & trade, or tax credits, or whatever... But the active obstruction is fantasy-land stuff. As is throwing your hands up because it's too hard to get your head around the problem.
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The charm of fishing is that it is the pursuit of what is elusive but attainable, a perpetual series of occasions for hope. -John Buchan