Karen Lloyd Costa Rica (IMAGE) University of Tennessee at Knoxville Caption Professor of Microbiology Karen Lloyd hands over a water sample while on a research trip to Costa Rica. Lloyd and her team studied carbon life forms in warm springs and volcanos. Scientists from around the world participated in the study. Location: Santa Teresa Spring. Credit Photo by Tom Owens. 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.