Prof. Dr. Thomas Litt and Manuela Rüßmann (image) University of Bonn Share Print E-Mail Caption with drill cores from Lake Van at MARUM, the Center for Marine Environmental Sciences in Bremen, where the cores were stored. Credit Photo: Nadine Pickarski/Uni Bonn Usage Restrictions This photo may be used with the press release. Share Print E-Mail 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.