The authors of the study (IMAGE) Max Planck Institute for Intelligent Systems Caption The authors of the study (from left to right): Alex Fratzl, Daniela Macari, Ksenia Keplinger, Christoph Keplinger (MPI-IS, W. Scheible) Credit MPI-IS, W. Scheible Usage Restrictions none License Original 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.