Cheaper air quality sensors arrived just in time for the climate catastrophe – Justine Calma

TOPSHOT-US-FIRES-POLLUTION-PORTLANDA man crosses a street in downtown Portland, Oregon where air quality due to smoke from wildfires was measured to be amongst the worst in the world, September 14, 2020. | Photo by ROBYN BECK/AFP via Getty Images

It’s gotten a lot easier for anyone to track wildfire smoke and air pollution 

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