Air Quality - Cities

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.

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Famous quotes containing the word cities:

    “What care though rival cities soar
    Along the stormy coast,
    Penn’s town, New York, Baltimore,
    If Boston knew the most!”
    —Ralph Waldo Emerson (1803–1882)