In addition, achievements of an unusually significant nature are considered and judged in relation to the potential effects of such achievements on the development of scientific thought. Also, consideration is given to distinguished service in the general advancement of science and engineering when accompanied by substantial contributions to the content of science at some time. Nominations are solicited by letters which are sent to colleges and universities, scientific, engineering, and other professional societies and organizations, and members of the National Academy of Sciences and National Academy of Engineering. This year more than 6,000 letters were mailed. The Committee receives approximately 150 new or renominations annually.
Candidates remain eligible for three years following the year of nomination.
Return to National Medal of Science information.