Prof. Karl Leo Presents Research (IMAGE) Technische Universität Dresden Caption Prof. Karl Leo (right) presents his research to former German President Joachim Gauck (center) and former Saxon Prime Minister Stanislaw Tillich (left). Credit Bundesregierung/Steffen Kugler 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.