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Comment Re:bah (Score 1) 208

It appears that 1500 ppb is an insane level.

From here

Nitrogen dioxide (NO2) is absorbed in both large and small airways. Very high concentrations (>200 ppm) are very dangerous, causing lung injury, fatal pulmonary edema, and bronchopneumonia.

(high levels of NO will convert to nitrogen dioxide in a short period)

The legal limit for air quality over a long period is 53 ppb, and 100 pbb over shorter periods. Children show an increase in asthma even at these levels.

NOx is a serious pollutant. It is a cause of acid rain, asthma, bronchitis and cancer.

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