Isaac Asimov was a Russian-born, American author, a professor of biochemistry, and a highly successful writer, best known for his works of science fiction and for his popular science books. Professor Asimov is generally considered one of the most prolific writers of all time, having written or edited more than 500 books and an estimated 90,000 letters and postcards. He has works published in nine of the ten major categories of the Dewey Decimal System (lacking only an entry in the 100s category of Philosophy). Asimov is widely considered a master of the science-fiction genre and, along with Robert A. Heinlein and Arthur C. Clarke, was considered one of the "Big Three" science-fiction writers during his lifetime. Asimov's most famous work is the Foundation Series; his other major series are the Galactic Empire series and the Robot series, both of which he later tied into the same fictional universe as the Foundation Series to create a unified "future history" for his stories much like those pioneered by Robert A. Heinlein and previously produced by Cordwainer Smith and Poul Anderson. He penned numerous short stories, among them "Nightfall", which in 1964 was voted by the Science Fiction Writers of America the best short science fiction story of all time, a title many still honor. He also wrote mysteries and fantasy, as well as a great amount of nonfiction. Asimov wrote the Lucky Starr series of juvenile science-fiction novels using the pen name Paul French. Most of Asimov's popularized science books explain scientific concepts in a historical way, going as far back as possible to a time when the science in question was at its simplest stage. He often provides nationalities, birth dates, and death dates for the scientists he mentions, as well as etymologies and pronunciation guides for technical terms. Examples include his Guide to Science, the three volume set Understanding Physics, and Asimov's Chronology of Science and Discovery. Asimov was a long-time member and Vice President of Mensa International, albeit reluctantly; he described some members of that organization as "brain-proud and aggressive about their IQs" He took more joy in being president of the American Humanist Association. The asteroid 5020 Asimov, the magazine Asimov's Science Fiction, a Brooklyn, NY elementary school, and two different Isaac Asimov Awards are named in his honor.

John Brunner was born in Preston Crowmarsh, near Wallingford in Oxfordshire, and went to school at St Andrew's Prep School, Pangbourne, then to Cheltenham College. He wrote his first novel, Galactic Storm, at 17, and published it under the pen-name Gill Hunt, but he did not start writing full-time until 1958. He served as an officer in the Royal Air Force from 1953 to 1955, and married Marjorie Rosamond Sauer on 12 July 1958 At the beginning of his writing career Brunner wrote conventional space opera pulp science fiction. Brunner later began to experiment with the novel form. His 1968 novel "Stand on Zanzibar" exploits the fragmented organizational style John Dos Passos invented for his USA trilogy, but updates it in terms of the theory of media popularised by Marshall McLuhan. "The Jagged Orbit" (1969) is set in a United States dominated by weapons proliferation and interracial violence, and has 100 numbered chapters varying in length from a single syllable to several pages in length. "The Sheep Look Up" (1972) depicts ecological catastrophe in America. Brunner is credited with coining the term "worm" and predicting the emergence of computer viruses in his 1975 novel "The Shockwave Rider", in which he used the term to describe software which reproduces itself across a computer network. Together with "Stand on Zanzibar", these novels have been called the "Club of Rome Quartet", named after the Club of Rome whose 1972 report The Limits to Growth warned of the dire effects of overpopulation. Brunner's pen names include K. H. Brunner, Gill Hunt, John Loxmith, Trevor Staines, Ellis Quick, Henry Crosstrees Jr., and Keith Woodcott. In addition to his fiction, Brunner wrote poetry and many unpaid articles in a variety of publications, particularly fanzines, but also 13 letters to the New Scientist and an article about the educational relevance of science fiction in Physics Education. Brunner was an active member of the organisation Campaign for Nuclear Disarmament and wrote the words to "The H-Bomb's Thunder", which was sung on the Aldermaston Marches. Brunner had an uneasy relationship with British new wave writers, who often considered him too American in his settings and themes. He attempted to shift to a more mainstream readership in the early 1980s, without success. Before his death, most of his books had fallen out of print. Brunner accused publishers of a conspiracy against him, although he was difficult to deal with (his wife had handled his publishing relations before she died).[2] Brunner's health began to decline in the 1980s and worsened with the death of his wife in 1986. He remarried, to Li Yi Tan, on 27 September 1991. He died of a heart attack in Glasgow on 25 August 1995, while attending the World Science Fiction Convention there aka K H Brunner, Henry Crosstrees Jr, Gill Hunt (with Dennis Hughes and E C Tubb), John Loxmith, Trevor Staines, Keith Woodcott Winner of the ESFS Awards in 1980 as "Best Author" and 1n 1984 as "Novelist"..

Sir Arthur Charles Clarke was one of the most important and influential figures in 20th century science fiction. He spent the first half of his life in England, where he served in World War Two as a radar operator, before emigrating to Ceylon in 1956. He is best known for the novel and movie 2001: A Space Odyssey, which he co-created with the assistance of Stanley Kubrick. Clarke was a graduate of King's College, London where he obtained First Class Honours in Physics and Mathematics. He is past Chairman of the British Interplanetary Society, a member of the Academy of Astronautics, the Royal Astronomical Society, and many other scientific organizations. Author of over fifty books, his numerous awards include the 1961 Kalinga Prize, the AAAS-Westinghouse science writing prize, the Bradford Washburn Award, and the John W. Campbell Award for his novel Rendezvous With Rama. Clarke also won the Nebula Award of the Science Fiction Writers of America in 1972, 1974 and 1979, the Hugo Award of the World Science Fiction Convention in 1974 and 1980, and in 1986 became Grand Master of the Science Fiction Writers of America. He was awarded the CBE in 1989.