ISAAC ASIMOV (1920-1992) was one of science fiction's greatest writers. He wrote prolifically across genres and academic fields, but was best known for his hard science fiction and popular science work. Asimov's fiction includes the short stories "Nightfall" and "I, Robot" and his award-winning novels Foundation's Edge and The Gods Themselves. His "Three Laws of Robotics" is only one example among many of his profound influence on science fiction.
FREDERIK POHL (1919-2013) was a profoundly influential science fiction author and editor. As an award-winning editor, he helmed Galaxy and If, and won the Nebula Award for Man Plus. Pohl collaborated with other sf authors such as Cyril M. Kornbluth on The Space Merchants, and Arthur C. Clarke on The Last Theorem.