I am working with a lot of organisations to increase awareness on air pollution -especially among students. The images of the dark lymph nodes by age remind me

I am working with a lot of organisations to increase awareness on air pollution -especially among students. The images of the dark lymph nodes by age remind me of the shocking images of lungs of smokers printed -by law- on cigarette boxes in certain countries. What they do is to make the hidden danger of the small partciles visible. I will use the images from this study in some of my presentations in future. It seems that the lung tissues analyzed come from an organisation in New York. So most likely people living in this area. Comparing pollution data of New York City [1] which -globally seen has relatively good air quality- to a very polluted city like New Delhi [2] makes me wonder how much worse this health effect is actually for people living in higher polluted countries. Increasing awareness on air pollution is one of the key reasons why we offer a popular open-source / open-hardware version of our professional air quality monitor so that people can easily build am affordable and accurate monitor [3] themselves. Similar to above images, it is another way to make the invisible particles in the air visible and helping quantifying the risks from fine particles in the air. [1] https://aqicn.org/city/usa/newyork/ https://aqicn.org/city/usa/newyork/ [2] https://aqicn.org/city/delhi/ https://aqicn.org/city/delhi/ [3] https://www.airgradient.com/open-airgradient/kits/ https://www.airgradient.com/open-airgradient/kits/