I want to talk about this idea of people really caring about air quality. They set up all these very inexpensive air boxes in their homes, in their schools, in their balconies, to measure PM2.5 and other important air quality metric.
I want to talk about this idea of people really caring about air quality. They set up all these very inexpensive air boxes in their homes, in their schools, in their balconies, to measure PM2.5 and other important air quality metric.