Ant Bridge in Use (VIDEO) Princeton University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption E. hamatum form living bridges without any oversight from a "lead" ant and with a clear cost-benefit ratio. The ants will create a path up to the point when too many workers are being diverted from collecting food and prey. Bridges will be the length of 10 to 20 ants -- only a few centimeters, but swarms form several bridges a day, which save collective energy and maximize foraging time. Credit Courtesy of Matthew Lutz, Princeton University, and Chris Reid, University of Sydney 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.