Grand Canyon Citizen Science (IMAGE) American Institute of Biological Sciences Caption Eric Kortenhoeven and Anya Metcalfe complete light trapping datasheets while participating in a Grand Canyon Youth river trip. Credit US Geological Survey Usage Restrictions None License Licensed 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.