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[jamesfowler]

Comments

[stillturning]

Hmm. What type of pollution? Air pollution, water pollution, soil contamination, solid waste, chemical waste, etc.? There are so many categories.

Check out this article: http://www.sciam.com/article.cfm?id=worlds-top-10-most-polluted-places

You may also try some of these sites:

http://www.who.int/topics/environmental_pollution/en/
http://www.worldbank.org/
http://earthtrends.wri.org/

Ooh! When you have a few moments, try this:
http://www.zerofootprint.net/one_minute/earthhour