Thanks to a link by hysterium I now know that my hometown of Merced is the 7th most polluted metropolitan area in the American Lung Association's State of the Air 2003 report. I laugh at this because of how true it is. Hell, the entire Central Valley of California needs to be in it. When travelling to Merced from here in Barstow I have to go through the Tehachipi Mountains and when coming down from the mountains into the valley you can see a very ominous smothering brown/black layer of smog you have to travel down into. Look at the cities listed #2, #3, #4 and #6. Those are also in the Central Valley. Air quality is one of the very few good things about moving here to Barstow.