#BeatAirPollution: Beijing's battle to clean up its air - UNEP
https://www.unep.org/interactive/beat-air-pollution/
By the end of 2017, cleaner air was visible. The annual average PM2.5 concentration in Beijing had dropped to 58ug/m3, down 35 per cent from 2013. Meanwhile, concentrations of sulphur dioxide had dropped by more than 93 per cent from 1998 levels and nitrous dioxide had fallen by nearly 38 per cent. Heavy pollution episodes were becoming less freque... case study
By the end of 2017, cleaner air was visible. The annual average PM2.5 concentration in Beijing had dropped to 58ug/m3, down 35 per cent from 2013. Meanwhile, concentrations of sulphur dioxide had dropped by more than 93 per cent from 1998 levels and nitrous dioxide had fallen by nearly 38 per cent. Heavy pollution episodes were becoming less freque...
case study
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