Endocrine Disruption

Intersex, the presence of both male and female characteristics within the same fish, is being observed in fish in more streams across the Nation. Intersex is one manifestation of endocrine disruption in fish. Endocrine disruption can result in adverse effects on the development of the brain and nervous system, the growth and function of the reproductive system, and the response to stressors in the...

Biosolids, the treated sludge generated by the treatment of sewage at wastewater treatment plants, is something that most people don't think about as they flush everyday chemicals and drugs down the drain. However, U.S. Geological Survey (USGS) scientists found that biosolids contain relatively high concentrations (hundreds of milligrams per kilogram) of the active ingredients commonly found in a...