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A comment on Diesel cars can be banned from German cities, court rules. Parent comment
https://maps.luftdaten.info/#2/0.0/0.0
Building and deploying your own sensor is pretty easy: https://bergie.iki.fi/blog/microflo-particulate-sensors/
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https://maps.luftdaten.info/#2/0.0/0.0
Building and deploying your own sensor is pretty easy: https://bergie.iki.fi/blog/microflo-particulate-sensors/