Air Quality: Easy to Measure, Tough to Fix
Cars That Think
SEPTEMBER 22, 2021
Portland, Ore., Of course, it's not enough to detect air pollutants; you must also remove them. Ionization can itself create ozone. The state of California has banned such ozone generators entirely. Purifiers vary widely in the pollutants they claim to clean and how they claim to clean them. Harry Campbell.
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