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Tougher rules for air quality likely soon - China Daily

Tougher rules for air quality likely soon - China Daily

Tougher rules for air quality likely soon
China Daily, China
Ozone at the ground level, which is formed when hydrocarbons and nitrogen oxides (NOx) combine in the presence of sunlight, causes photochemical smog and also harms people's health. Several major cities, including Beijing, Shanghai, Guangzhou and

Source: news.google.com

A Forest of Chimneys - San Francisco Chronicle


San Francisco Chronicle
A Forest of Chimneys
San Francisco Chronicle,  USA
In the summer of 1998, the capital city cowered under a relentless cloud of smog. The decorative arches that once graced many of Beijing's streets had been demolished in the fifties, denigrated as obstacles to traffic. Factories were more prevalent

Source: news.google.com

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