Artificial Stream Facility (IMAGE) Cary Institute of Ecosystem Studies 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. License Licensed content 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.