Beijing’s air quality shows significant improvements as ‘war on pollution’ targ
 

Beijingâ??s air quality has improved significantly since the start of the â??war on pollutionâ?* seven years ago, according to official figures. In 2019, the capitalâ??s average concentration of PM2.5 â?? the most harmful small particles and a key indicator of air pollution â?? fell to their lowest levels since its integrated air quality monitoring network …

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