Field crew_Jefferson Hall_STRI (IMAGE) Smithsonian Tropical Research Institute Caption Claire Beckstoffer, co-author, UC Berkeley, with Agua Salud Project staff Guillermo Fernández, Johana Balbuena and Victorino Montenegro. Credit Jefferson Hall, Smithsonian Tropical Research Institute Usage Restrictions Credit: STRI 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.