A good article about the DIY Corsi-Rosenthal Box that is being used more in classrooms as DIY and open source enthusiasts share their builds and the creators motivate others on twitter to build them to protect against Covid and other airborne illnesses.
https://cleanarair.com/ here's a website that includes lesson plans for teacher who want to build them as a lesson in class for different age ranges, as well as convenient kits and general information.
oh nice, ive never heard of pea protein before. I’ve been making so much of the same pasta lately