Hydrologists sampling in the Sierras (IMAGE) University of California - Riverside Caption Study authors and UCR hydrologists Sandra Armengol and James Sickman sampling water from the Sierra Nevadas. Credit Hoori Ajami/UCR Usage Restrictions None 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.