Pollution in many of the world’s cities is becoming a major health problem. One of the worst affected is Beijing, the capital of China. Air quality was dangerously low on 58 days last year. Winter months are especially bad. (1) . There is also less wind to blow the smog away. At this time of year, pollution levels are sometimes 20 times higher than the WHO (World Health Organisation) considers safe.
These included pouring water onto roads to reduce the amount of dust flying in the air.
This is the time of year when more coal is burned to heat people’s homes.
These ideas should help to reduce pollution in the future, which will improve health standards in major cities.
The one that the people were watching that morning was for a holiday company.