Thomas Karl (IMAGE) University of Innsbruck Caption Thomas Karl untersuchte die Luft über den Dächern von Innsbruck. Credit Uni Innsbruck Usage Restrictions Use only in reporting on research by Thomas Karl. 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.