Adam squires @adsquires 5 ene.

Thread: How do we make the air in classrooms safer?
All you need to know about HEPA filters,CO2 monitors and ventilation. Contents: basic ideas; how to with links to resources; caveats; links to studies / evidence (that I'll add to cos takes more time) 1/

https://twitter.com/adsquires/status/1478804143837954056