Michael Sigl, PhD (IMAGE) University of Bern Caption Michael Sigl, PhD, Oeschger Centre for Climate Change Research (OCCR), University of Bern Credit Photograph courtesy of Michael Sigl Usage Restrictions Photograph courtesy of Michael Sigl 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.