Scientist says male fish in Potomac is growing eggs

Male fish that are growing eggs have been found in the Potomac River near Sharpsburg, Maryland.That's according to a scientist with the U-S Geological Survey.
The discovery indicates that a troubling pollution mystery is spreading downstream from the river's South Branch, in West Virginia, where the abnormality was first detected.
Scientists say nine male smallmouth bass taken from the river near Sharpsburg were found to have developed eggs inside their sex organs.
The problems are apparently linked to pollutants from sewage plants, feedlots and factories that can interfere with hormone systems. Scientists are investigating whether the same compounds are linked to certain cancers in humans.