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:
“How far men go for the material of their houses! The inhabitants of the most civilized cities, in all ages, send into far, primitive forests, beyond the bounds of their civilization, where the moose and bear and savage dwell, for their pine boards for ordinary use. And, on the other hand, the savage soon receives from cities iron arrow-points, hatchets, and guns, to point his savageness with.”
—Henry David Thoreau (1817–1862)
“Beyond the horizon, or even the knowledge, of the cities along the coast, a great, creative impulse is at work—the only thing, after all, that gives this continent meaning and a guarantee of the future. Every Australian ought to climb up here, once in a way, and glimpse the various, manifold life of which he is a part.”
—Vance Palmer (1885–1959)
“We are a most solitary people, and we live, repelled by one another, in the gray, outcast cities of Cain.”
—Edward Dahlberg (1900–1977)