Cowling was elected in 2008 but only signed the register, officially inaugurating him, at the Academy's annual meeting in Washington DC on 27 April.
The National Academy of Sciences (NAS) is a private, nonprofit organization of the USA's leading researchers. The NAS recognizes and promotes outstanding science through election to membership; publication in its journal, PNAS; and its awards, programs, and special activities. Through the National Academies of Sciences, Engineering, and Medicine, the NAS provides objective, science-based advice on critical issues affecting the nation.
Members are elected to the National Academy of Sciences in recognition of their distinguished and continuing achievements in original research. Membership is a widely accepted mark of excellence in science and is considered one of the highest honours that a scientist can receive. Current NAS membership totals approximately 2,380 members and nearly 485 foreign associates, of whom approximately 190 have received Nobel prizes. Only three of foreign associates are South African (including Prof Cowling).
In a nutshell, the Academy is like the Oscars of Science!