Complex sentence: Heinz Rudolf Pagels (1939--July 23,1988) was an American physicist; an adjunct professor of physics at Rockefeller University, the executive director of the New York Academy of Sciences and president of the International League for Human Rights.
Split into simpler sentences: Heinz Rudolf Pagels (1939--July 23,1988) was an American physicist. He was an adjunct professor of physics at Rockefeller University, the executive director of the New York Academy of Sciences and president of the International League for Human Rights.