Article below initially posted by @Andrewhinton is too good.

#MeganMolteni #LinseyMarr #LidhtMorawska #YuguoLi @jljcolorado #KatieRandall #WilliamFirthWells #AlexanderLangmuir

Science: A community project.

#Covid #Masks #5Micron #5MicronMyth #Aerosol #Filtration #Filters

https://www.wired.com/story/the-teeny-tiny-scientific-screwup-that-helped-covid-kill/