Hi, May be of interest: Algal Toxins Detected in One-Third of Streams Assessed in Southeastern United States http://www.usgs.gov/newsroom/article.asp?ID=4455&from=rss_home#.VsSZ3X6rTcs Enjoy the day, Emily Emily C. Wild Librarian (Physical Scientist) U.S. Geological Survey, Denver Library Denver Federal Center ph: (303) 236-1003 [log in to unmask] USGS Libraries: http://library.usgs.gov Training: http://go.usa.gov/cBfmG Profile: https://profile.usgs.gov/ecwild