World's most polluted cities

POSTED: 09:23 AM PST Jan 14, 2013    UPDATED: 06:22 AM PDT Mar 29, 2013 

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 - Sukinda
3 / 14

Sukinda, India -- India's Sukinda Valley contains 97 percent of the country's chromite ore deposits -- used mainly to make chrome plating and stainless steel. Mining leave toxic chromium hexavalent in the air, soil, and surface and drinking water.

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