How much nose hair would you need to protect you from your city's pollution?

Fun fact: research suggests that people with more nose hair (that is, nose inside their nostrils, not hairy noses, though we're not entirely sure the two aren't unrelated) are less likely to develop asthma than those with less-bristly nose-holes. Why would we bring this up? To help you make sense of the image up top. It's one of several data visualizations released by Clean Air Asia that illustrate cities' pollution levels in terms of nose-hair length.

This is a thing. It's a thing that exists out there, on the Internet, and we thought it better that you hear about it from us before you happened upon it on your own.