Thomas Karl (image) University of Innsbruck Share Print E-Mail Caption Thomas Karl studies the atmosphere above the rooftops of Innsbruck. Credit University of Innsbruck Usage Restrictions Use only in reporting on research by Thomas Karl. 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.