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Gassy farm soils are a shockingly large source of these air pollutants

Smog-causing nitrogen oxide gases aren’t only found in auto exhaust

agricultural fields

FIELD FUMES California’s agricultural regions are responsible for between 20 and 51 percent of the total emissions of nitrogen oxide gases in the state, new research finds. Such “NOx” gases, which include nitric oxide and nitrogen dioxide, help produce toxic smog.

slobo/iStockphoto

By Carolyn Gramling

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