30% of the particulate matter found in the air during the winter comes from wood smoke.
Download Original: 300 × 300 Soot in Your Stocking: A Spate of Spare-the-Air Days in the Bay Area
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30% of the particulate matter found in the air during the winter comes from wood smoke.
Download Original: 300 × 300 Soot in Your Stocking: A Spate of Spare-the-Air Days in the Bay Area