2023-12-08 20:50:21.936564+01 by Dan Lyke 0 comments
Schools cut covid-19 sick days by 20 per cent using HEPA air filters
Placing HEPA air filters into classrooms in the Bradford area of the UK reduced the number of covid-19-related absences among students by more than 20 per cent
Okay, now do CO2 levels and test scores!
[ related topics: Children and growing up Global Warming ]
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