Beijing's foggy Sunday

Nowadays,the annoying foggy weather has spread to the east of China,letting alone all the way to our great capital Beijing......Today is Sunday,but it's not a sunny Sunday.Air outside smells like acid,and the fog has fantastic consistency.Oh! I am worrying about that how the rate of lung cancer patients people will increase in the future.
So what on earth generates the foggy days?
Is it industry contamination or the cars——actually I heard the cabbies complaining about that people ascribe everything that connects with polluted air to taxis.
I remember that London has the reputation of The City Of Fog with its industry development.Was it also a period of polluted tough days or an episode of romance as it is regarded now.

Beijing's foggy Sunday

Today, the annoying foggy weather has spread to the east of China, leaving alone our great capital Beijing. Today is Sunday but it's not a sunny Sunday. Air outside smells like acid and the fog has fantastic consistency. Oh! I am worried that the rate of lung cancer will increase in the future.
So what on earth generates the foggy days?
Is it industry contamination or the cars? I heard the cabbies complaining about that people blame the polluted air on taxis.
I remember that London has the reputation of 'The City Of Fog' during the industrial development. Was it also a period of tough, polluted days, or an period of romance as it is regarded now?