Fishy Geology (IMAGE) Massachusetts Institute of Technology Caption Taylor Perron and Maya Stokes sample stream sediments. “If we can understand the geologic factors that contribute to biodiversity, we can do a better job of conserving it,” says Perron. Credit Image: Sean Gallen Usage Restrictions Images are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images 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.