Can We Measure Air Pollution by Looking at the Color of the Sky?
- Thomas Talhelm
- Thomas Talhelm
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I have noticed a lot of this too. Your article brings more definition to what I am seeing. Moved to a very polluted city a few years ago. Ita gross.
Thanks for sharing your knowledge with us! I live in a polluted city and I have to confess that I hadn’t noticed these signs before.