Example of collective self-optimisation (IMAGE) Heinrich-Heine University Duesseldorf Caption Example of collective self-optimisation (a): Pattern for social temperature regulation among Emperor penguins, which act as sources of heat (red) and at the same time move toward their ideal temperature (green arrow). (b) Aerial view of the balance configuration of 32 penguins (green discs) close to the collective ideal state. The black lines are isotherms, while the dark red shades represent high temperatures. Credit HHU / Alexandra V. Zampetaki Usage Restrictions No restrictions. License Public Domain 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.