Isaac Asimov (b. between October 4, 1919 and January 2, 1920; d. April 6, 1992) was a Russian-born American author and professor of biochemistry, a highly successful writer, best known for his works of science fiction and for his popular science books. One of his legacies is the science fiction pulp magazine, Asimov's Science Fiction, which is still published to this day. Harry Turtledove has published several of his short stories in Asimov's. For Asimov's part, he wrote the forewords for Turtledove's anthologies Agent of Byzantium and A Different Flesh.