Root Network (IMAGE) Proceedings of the National Academy of Sciences Caption Drawing of root network based on field observations. Credit Image credit: Courtney Currier (Arizona State University, Tempe, AZ). 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.