Navlakha Plant Networks (image) Salk Institute Share Print E-Mail Caption Salk Institute scientists find that plants and subway systems are both networks that strive to make similar tradeoffs between cost and performance. Credit Salk Institute Usage Restrictions with credit and related coverage. Share Print E-Mail 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.