18 Nov '11, 4pm

Behold: The 20 Dirtiest, Most Polluted Cities in America

Behold: The 20 Dirtiest, Most Polluted Cities in America

steven.buss via Flickr /CC BY-SA 2.0 Every so often some publication or other will roll out a list reminding us that a bunch of American cities suffer from repulsive levels of air pollution. Thanks a bunch, publications. And many of those cities can reliably be found in California's sprawling, car-dependent cities, which are also often unfortunately geographically adept at trapping smog. This time, the list comes from Forbes , which crunched the data from the annual American Lung Association report on national air quality. And as usual, it's ugly. Grist condensed the list into a top 20 countdown, and here 'tis: 20. Cleveland, Ohio 19. Indianapolis, Ind. 18. Houston, Tx. 17. Salt Lake City, Utah 16. Washington, D.C. 15. Knoxville, Tenn. 14. New York, N.Y. 13. Cincinnatti, Ohio 12. Philadelphia, Pa. 11. Louisville, Ky. 10. Sacramento, Calif. 9. San Diego, Calif. 8. Phoenix, ...

Full article: http://www.treehugger.com/urban-design/behold-forbess-20-...

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