Julia Saltz, Rice University (IMAGE) Rice University Caption Rice University evolutionary biologist Julia Saltz manipulated fruit fly populations to show that individuals are not merely subject to their social environments, but choose and create them through their interactions. Her study appears in the Nature journal Heredity. Credit Jeff Fitlow/Rice University Usage Restrictions None 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.