Blacksmith Institute's World's Worst Polluted Places list is an unranked listing of ten top locations worldwide where polluted air, water, and soils are having a severe impact on human health, particularly the health of children. We recognize that the list is not definitive due to the lack of consistent data and access to sites but it is representative of the problems that are out there. We welcome site nominations and feedback on our criteria for consideration in developing the 2008 report.