Its calm, quiet surroundings and low pollution make it a desirable residential oasis.

Her asthma gets worse in the summer, but pollution in the air, makes going outside a nightmare.

Many are killed but the rest decide to go home because the pollution made the city and its people literally distasteful.

It was known as a spawing ground for salmon, but major pollution from mills made this a thing of the past.

The pollution of the river made it less valuable to the city.

The fountains were sealed in 1950 because pollution made it dangerous to drink the water.

At the same time, the encroaching light pollution from the growing city of Melbourne gradually made quality astronomical observations increasingly difficult.

Far more important, they said, the pollution makes it harder for people to breathe.

In the late 1960s pollution made it dangerous to swim at some beaches of the lake; indeed, visibility under water was near zero.

Summer humidity and the city's heavy pollution make the sky hazy.