Teachers Participating in a BES Workshop (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption USGS scientist Bob Shedlock discusses the health of Minebank Run in Baltimore County with a group of teachers participating in a BES workshop. Credit BES Photo Archive Usage Restrictions May be used 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.