Environment: The Perils of PCBs

Spring is usually a time of heightened activity along the Hudson River, as fishermen turn out in force to share in its bounty. But this year is different. New York State authorities have already closed the river to commercial fishing for striped bass, eels and several other species. Now, fish and game officials fear they may also have to forbid fishing for the roe-laden shad that are just making their appearance in the Hudson. Reason: the river is polluted with a particularly persistent and dangerous class of chemical compounds called polychlorinated biphenyls, or PCBs. Worse, despite remedial action by General...

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