Puca Glacier (IMAGE) University of Colorado at Boulder Caption A University of Colorado at Boulder study of microbes beneath the retreating Puca Glacier at 16,400 feet in the Peruvian Andes is the first to show how life becomes established and flourishes in one of the most extreme environments on Earth. Shown is CU-Boulder postdoctoral researcher Elizabeth Costello, a study co-author. Credit Photo courtesy Steve Schmidt/University of Colorado 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.