Fascinating stuff. Sorry if you can't see it, but there's no way to copy the simulation into a post.

https://www.nytimes.com/intera...r_axiosam&stream=top

That is really cool. It also highlights how difficult it is to really remove the threat of aerosol infection when there's someone with COVID in the room.

Having pushed K-12 teachers and staff into the first wave of vaccinations, our governor has just mandated that all schools must reopen (with at least a hybrid model). I have no idea if they've considered physical classroom factors, but I think not. We're getting close to open window season, though--for those classrooms that can.