Rakesh K. Jain, the A. Werk Cook Professor of Radiation Oncology for Tumor Biology at Massachusetts General Hospital and a member of the affiliated faculty of the Harvard-MIT Division of Health Sciences and Technology, and Cumrun Vafa, the Donner Professor of Science in the Department of Physics, have been recently elected into the National Academy of Sciences (NAS) for excellence in original scientific research. They will be inducted into the Academy next April during its 147th annual meeting in Washington, D.C. Membership in the NAS is one of the highest honors given to a scientist or engineer in the United States.