BEIJING--Authorities issued their highest warnings for fog and haze on Tuesday as smog enveloped major cities in northern China, warning the public that visibility could drop to less than 50 ...

SHANGHAI--Major industrial areas in northern China are at risk of falling short ... down cement factories in December in a bid to reduce smog build-ups.

After all, Hong Kong is just a dot on the map of China, so purifying the air ... We should set up gigantic, solar-powered fans to blow all the smog and pollution towards a mega-greenhouse, located ...