A view of Hong Kong's skyline. Photo: EPA A view of Hong Kong's skyline. Photo: EPA
A view of Hong Kong's skyline. Photo: EPA

Pearl River Delta air quality improves but ozone levels rise, report shows

While pollutant counts fall in Pearl River Delta, concentration of harmful gas increases: report

A view of Hong Kong's skyline. Photo: EPA A view of Hong Kong's skyline. Photo: EPA
A view of Hong Kong's skyline. Photo: EPA
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