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Danielle Echeverria

2021-10-13 00:15:49


After last year's wildfires (remember Orange Sky Day?), the number of low-cost air quality sensors like @ThePurpleAir shot up in the Bay Area — but not everywhere. @yoohyun_jung and I looked at where sensors are and aren't, and what's being done to fix it:
@PurpleAir.com @Yoohyun Jung 🌍
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