Air Quality: Easy to Measure, Tough to Fix
Cars That Think
SEPTEMBER 22, 2021
Portland, Ore., All outdoor activity in my neighborhood ceased for weeks, yet staying indoors didn't guarantee relief. a specific standard of efficiency based on its rating , but this is often combined with unproven UV light, ionization, and ozone technologies that vaguely claim to catch toxins and kill pathogens, even COVID-19.
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