World's most polluted cities

Published On: Jan 14 2013 11:23:54 AM CST   Updated On: Mar 29 2013 08:22:36 AM CDT

Take a look at some of the world's most polluted cities, as ranked and compiled by Time, the Blacksmith Institute and ABC Environment.

Most Polluted - Zambia
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Kabwe, Zambia -- Rich deposits of lead were found here in 1902, and while most mines and smelters are no longer operating, lead concentrations in children are five to 10 times the permissible U.S. Environmental Protection Agency levels, and can even be high enough to kill, according to Time.

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