3 ms·
HEPA filter + box fan is very common, and very cheap. Not sure why this is particularly notable.
by devicenull 12y ago
HEPA filter + box fan is very common, and very cheap. Not sure why this is particularly notable.
- Zikes 12y agoApparently not very common in China, which would make it notable there. Citing Talhelm as "grad student" in the title makes it a bit more clickbaity, gives it a sort of a "one weird trick" vibe, but reading the article it does sound like he's onto something.