Inga Geipel (IMAGE) Smithsonian Tropical Research Institute Caption Inga Geipel, postdoctoral fellow at the Smithsonian Tropical Research Institute in Panama, asked how the sound of rain would affect the behavior of two insect-eating bats. Credit Claudia Rahlmeier Usage Restrictions Credit: Claudia Rahlmeier 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.