Author Image (IMAGE) Salk Institute Caption Edward Callaway is one of 100 new members and 25 foreign associates to be elected to the NAS in recognition of their distinguished and continuing achievements in original research. Credit Salk Institute Usage Restrictions with credit and related coverage. 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.