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jread
on Dec 6, 2013
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Schoolchildren ordered indoors as air pollution cl...
I lived in Utah which can get very smoggy due to winter inversions. PM2.5 levels sometimes hit 80 mcg in the winter, often the highest in the country and utterly depressing to live in.
seanmcdirmid
on Dec 6, 2013
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Its a scandal when SLC hits 70 2.5PM, its just a bad day when Beijing hits 700 2.5PM. There is just no comparison.
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