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Installing air filters in classrooms has surprisingly large educational benefits (2020)

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308 points tangjurine | 1 comments | 31 Mar 25 00:22 UTC | HN request time: 0.204s | source
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hollerith ◴[31 Mar 25 02:01 UTC] No.43529951[source]▶
Install air filters in classrooms in Los Angeles has.

Places with clean outdoor air probably won't see much benefit.

replies(1): >>43530811 #
1. sebastiennight ◴[31 Mar 25 03:58 UTC] No.43530811[source]▶
Which begs the question. How many of those places are there, and how many large groups of humans with children would you believe live in such places?