A member of the National Academy of Sciences and the American Academy of Arts and Sciences, Koprowski served as director of the Wistar Institute of Anatomy and Biology from 1957 to 1991. He also has been a consultant to the World Health Organization since 1950, and has received many international honors.
For a long time, Koprowski felt that the scientific community needed a newspaper to keep scientists abreast of current trends in their profession. He comments, "The Scientist is a valuable publication and certainly a worthwhile venture. The need for current information about hot topics in science is profound. The Scientist fills that need."