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Understanding PCBs

Posted on January 18th, 2011

Photo Gallery: A Research Cruise on Lake Michigan For more than a hundred years, toxins generated by heavy industry in East Chicago, Ind., settled to the bottom of the Indiana Harbor and Ship Canal (IHSC), creating a deep layer of thick sludgy mud that is home to everything from heavy metals to polychlorinated biphenyls (PCBs). […]

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