The uncurbed growth of private cars rendered attempts to clean up roadside air impossible. Photo: David Wong The uncurbed growth of private cars rendered attempts to clean up roadside air impossible. Photo: David Wong
The uncurbed growth of private cars rendered attempts to clean up roadside air impossible. Photo: David Wong

Restricting car usage is the only effective way to cut air pollution in Hong Kong

The uncurbed growth of private cars rendered attempts to clean up roadside air impossible. Photo: David Wong The uncurbed growth of private cars rendered attempts to clean up roadside air impossible. Photo: David Wong
The uncurbed growth of private cars rendered attempts to clean up roadside air impossible. Photo: David Wong
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