Frederik Pohl was born in 1919 and has been professionally involved in sf as an editor and writer since his teens. Among his many books are A Plague of Pythons, Gateway, Man Plus and JEM: The Making of a Utopia. C.M. Kornbluth (1923-1958) was the bureau chief of a Chicago news agency until 1951 when he took up fiction writing full time. He established himself very quickly as a brilliant short-story writer with works such as ¿The Little Black Bag¿, ¿The Marching Morons¿, ¿The Cosmic Charge Account¿ and ¿Two Dooms¿. Pohl and Kornbluth started writing stories together in 1940 and their collaborations include The Space Merchants, Search the Sky and Gladiators-at-Law.