But on a deeper level, the culture of grossness may also be a collective response to an increasingly ugly and polluted urban environment.

On a larger scale, two songs contemplate a polluted environment.

In this respect it may provide improved air quality in some types of polluted environments such as cities.

It has also raised concerns that efforts to improve China's polluted environment will be muted by the demand for power.

Imagine you were living in Mexico City, one of the most polluted environments in the world.

People of this village believe that this structure gives a less polluted environment.

In 1990 environmental scientists claimed that two-thirds of Bulgaria's population suffered from the polluted environment to some degree.

In Belarus, 18 per cent of the total population live in a heavily polluted environment.

We have a polluted environment, which has a negative impact on human health.

Foods containing chemicals and the polluted environment are to blame for allergies.