For more than a century, toxins generated by heavy industry settled to the bottom of the Indiana Harbor and Ship Canal (IHSC) in East Chicago, Ind., creating thick sludgy mud that is home to everything from heavy metals to polychlorinated biphenyls (PCBs). The U.S. Army Corps of Engineers has announced plans to dredge the canal, but the plan raises questions for scientists.
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Understanding PCBs
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). […]
