"Scientists found intersex fish in three river basins in Pennsylvania, a sign that the water may be tainted with chemicals from human activity.

Male smallmouth bass with female characteristics — namely, immature egg cells in their testes — were discovered in the drainage areas of the Susquehanna, Delaware and Ohio rivers, according to a new study led by the U.S. Geological Survey (USGS)."

Megan Gannon reports for LiveScience July 1, 2014. [2]