RSS BotMB to Hacker NewsEnglish · 4 天前Installing air filters in classrooms has surprisingly large educational benefitswww.vox.comexternal-linkmessage-square1fedilinkarrow-up159arrow-down11file-text
arrow-up158arrow-down1external-linkInstalling air filters in classrooms has surprisingly large educational benefitswww.vox.comRSS BotMB to Hacker NewsEnglish · 4 天前message-square1fedilinkfile-text
minus-squarezbyte64@awful.systemslinkfedilinkEnglisharrow-up7·4 天前I imagine the teachers are talking fewer sick days as well…
I imagine the teachers are talking fewer sick days as well…