It did not sit well when word arrived the other week that Milan was the world's most polluted city.

The environment is such a disaster that 16 of the world's most polluted cities are now in China.

Tehran is rated as one of the world's most polluted cities.

Twelve of the world's 15 most polluted cities are in Asia.

Consequently it has developed a reputation as one of China's most polluted cities.

The latter makes it a very polluted city where the air condition is quite poor.

The cars would be sold in the nine most polluted cities.

It is also one of the most populous and polluted cities in the world.

Atlanta is also one of the most polluted cities in the country.

Both children soon died of tuberculosis in the polluted city.