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The city has deployed a system of sensors to flag highly polluting vehicles. Nearly all of them have been repaired, helping to clean Hong Kong’s air.
Learn more about your ad choices. Visit megaphone.fm/adchoices
By Scientific American4.2
599599 ratings
The city has deployed a system of sensors to flag highly polluting vehicles. Nearly all of them have been repaired, helping to clean Hong Kong’s air.
Learn more about your ad choices. Visit megaphone.fm/adchoices

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