A woman with a bike passes by the main electric factory of Lanzhou, Guo Jian, which uses cial a s energy source and is one of the main source of pollution of the town. China.
Lanzhou, in the Gansu province is the most polluted cities of China and in the world's top ten for atmospheric pollution due to human activity. The town is situated between two hills along the Yellow River and the polluted clouds remain blocked over the town. The sky is most of the time hidden by the pollution.
- David Gourhan
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pollution china chine chinese chinoise chinois lanzhou gansu polluted environment ecology green grey gas warming effect global nature town city urban activity img images pictures photos asia asian province mask masks people with wearing masque masques anti protection against emissions so2 dust chimneys factories factory yellow smoke air quality poor bad worse smokestacks industry