Tumors in fish in the Milwaukee

Researchers have found elevated numbers of tumors in fish in the Milwaukee, Menomonee and Kinnickinnic rivers, suggesting that efforts to remove carcinogenic contaminants from the three waterways have been unsuccessful.

The study, which was led by the U.S. Geological Survey, found elevated skin and liver tumors in white suckers. It also found that some male white suckers sampled for the study had testicular tumors.

The Milwaukee Journal Sentinel reported that the finding surprised researchers, because those tumors had not often been found in other cleanup projects of polluted rivers...