Artificial Stream Facility (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption The Artificial Stream Facility at the Cary Institute is used to study the ecological consequences of PPCP pollution. Credit photo credit: Erinn Richmond Usage Restrictions To promote this press release. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.