A woman covering her mouth in Causeway Bay. Photo: Sam Tsang

Mobile app helps Hongkongers to plan out less-polluted route

First-of-its-kind system powered by ‘big data’ pinpoints locations down to rooms in a building

Topic |   Hong Kong air pollution

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A woman covering her mouth in Causeway Bay. Photo: Sam Tsang
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Ernest Kao

Ernest Kao

Ernest is a reporter at the SCMP. He mainly covers environment, energy, science and urban planning and development issues.