The Order of Life (IMAGE) Max-Planck-Gesellschaft Caption Particles of two types (red and green) interact with each other. While particles of the same type inevitably experience reciprocal attraction or repulsion, particles of different types can interact non-reciprocally. Here the green particles chase the red particles. On a large scale, the highly compressed bands of the green particles chase the bands of the red particles. This creates order and movement in the system. Credit MPIDS / Novak, Saha, Agudo-Canalejo, Golestania Usage Restrictions Use of images is limited to editorial coverage of scientific topics relating to the activities of the Max Planck Society. Any kind of commercial use (including, in particular, the exploitation of images by means of sale or incorporation in image databases or image catalogues) as well as any promotional use/use for merchandise purposes, disclosure to third parties or granting of related rights to third parties is expressly not permitted. 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.