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While we're talking about numbers...great progress in lowering the outdoor air pollution limit for PM2.5 from 12 ug/m3 to 9 ug/m3. Do you know what the legally enforceable limit is for *indoor* particles? Have a listen.

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Joseph Allen

48,826 subscribers

11,138 Aufrufe • vor 2 Jahren •via X (Twitter)

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Profilbild von Scott Farbman
Scott Farbmanvor 2 Jahren

We’ve been monitoring pm2.5 in our backyard and let me tell you something …

Profilbild von Don Osborn
Don Osbornvor 2 Jahren

5000 ug/m3

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