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Discovering microbes with a taste for PCBs.

In the past few years microbial ecologists and microbiologists have been finding new organisms in the environment with unexpected abilities to degrade toxic chemicals. Efforts are now under way to harness those natural abilities and use them in cleaning up toxic chemicals, first by enhancing the performance of nonengineered microorganisms and later by endowing them with new capabilities through genetic engineering. This summer scientists began the first field test of a biological approach to degrade polychlorinated biphenyls in Schenectady, New York.