Cities
Air pollution is usually concentrated in densely populated metropolitan areas, especially in developing countries where environmental regulations are relatively lax or nonexistent. However, even populated areas in developed countries attain unhealthy levels of pollution with Los Angeles and Rome being two good examples.
Read more about this topic: Air Quality
Famous quotes containing the word cities:
“The only phenomenon with which writing has always been concomitant is the creation of cities and empires, that is the integration of large numbers of individuals into a political system, and their grading into castes or classes.... It seems to have favored the exploitation of human beings rather than their enlightenment.”
—Claude Lévi-Strauss (b. 1908)
“This is not only a war of soldiers in uniform. It is a war of the people, of all the people, and it must be fought not only on the battlefield but in the cities and the villages, in the factories and on the farms, in the home and in the heart of every man, woman and child who loves freedom.”
—Arthur Wimperis (1874–1953)