Air Quality: Easy to Measure, Tough to Fix
Cars That Think
SEPTEMBER 22, 2021
The summer of 2020 brought wildfire to. Portland, Ore., All outdoor activity in my neighborhood ceased for weeks, yet staying indoors didn't guarantee relief. Air purifiers surged in popularity through the second half of 2020 in response to dual airborne threats of COVID-19 and wildfire smoke. Harry Campbell.
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