Dr. James Metcalf GSL.jpg (IMAGE) Brain Chemistry Labs Caption Dr. James Metcalf taking air samples at the Great Salt Lake for cyanobacteria toxin analysis. Credit Paul Alan Cox Usage Restrictions No commercial use. License Original 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.