British-born author Charles Sheffield (1935-2002) was the author of numerous books, including the recent Dark as Day and The Amazing Dr. Darwin. He won the 1993 Nebula Award for his novelette “Georgia On My Mind,” which also won the 1994 Hugo Award. His novel Brother to Dragons won the John W. Campbell Memorial Award. Sheffield served as toastmaster at the 1998 worldcon in Baltimore. In addition to being an author, Sheffield was also a physicist and contributed numerous fact articles to Analog. He has published over 100 technical papers and scientific articles. He worked as the Chief Scientist for the Earth Satellite Corporation on remote sensing satellite data. Sheffield served as the President of the SFWA as well as President of the American Astronautical Society. Sheffield was married to author Nancy Kress.