Fly robot video (VIDEO) Penn State This video is under embargo. Please login to access this video. Caption This clip describes how researchers discovered fruit flies, and other visually active animals in the animal kingdom, synchronize the movements of their heads and bodies to stabilize their vision. Credit Penn State College of Engineering Usage Restrictions Educational purposes only 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.