A woman wearing a mask rides in smog-shrouded Tianjin in northern China. Photo: Xinhua

Are falling levels of PM2.5 creating new ozone air pollution woes in Beijing area?

Ozone pollution is getting worse in the capital and its neighbouring cities

Topic |   Beijing air pollution

TOP PICKS

A woman wearing a mask rides in smog-shrouded Tianjin in northern China. Photo: Xinhua
READ FULL ARTICLE