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Old 01-13-2008, 01:43 PM   #9 (permalink)
roflwaffle
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I think I've asked you this before treb, but do you have any links on how NOx is so bad? It undoubtedly isn't good as a precursor to smog and is likely a carcinogen, but from what I've read the most dangerous culprit is PM<2.5.
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