Blurt!Commonplace Book

“The cities that had a US embassy that set up one of these monitors and tweeted out air-quality data saw a decrease of PM2.5 particulates to the tune of 2 to 4 micrograms per cubic meter—compared to their air quality before getting the monitor and to other similar cities that do not have a monitor.”

posted Sunday, November 13, 2022, 8:00:00pm PST