wind velocity and streamlines (IMAGE) Johannes Gutenberg Universitaet Mainz Caption Wind velocity and streamlines at an altitude of about 10 kilometers above the Earth's surface on the onset of a Western Europe heat wave (23 August 2016). Credit ill./©: Georgios Fragkoulidis Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.