Soot from heaters and traffic is not just a local problem: a study from Thuringia shows 50% of the soot that is harmful to health comes from local sources and 50% from long-distance transport. Even over distances of several hundred kms, it still contributes to health hazards and climate warming .
https://ift.tt/3ctnREk via /r/science https://ift.tt/3pQdoIJ
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