Laurence van Cott Niven's best known work is Ringworld (Ringworld, #1) (1970), which received the Hugo, Locus, Ditmar, and Nebula awards. His work is primarily hard science fiction, using big science concepts and theoretical physics. The creation of thoroughly worked-out alien species, which are very different from humans both physically and mentally, is recognized as one of Niven's main strengths. Niven also often includes elements of detective fiction and adventure stories. His fantasy includes The Magic Goes Away series, which utilizes an exhaustible resource, called Mana, to make the magic a non-renewable resource. Niven created an alien species, the Kzin, which were featured in a series of twelve collection books, the Man-Kzin Wars. He co-authored a number of novels with Jerry Pournelle. In fact, much of his writing since the 1970s has been in collaboration, particularly with Pournelle, Steven Barnes, Brenda Cooper, or Edward M. Lerner. He briefly attended the California Institute of Technology and graduated with a Bachelor of Arts in mathematics (with a minor in psychology) from Washburn University, Topeka, Kansas, in 1962. He did a year of graduate work in mathematics at the University of California at Los Angeles. He has since lived in Los Angeles suburbs, including Chatsworth and Tarzana, as a full-time writer. He married Marilyn Joyce "Fuzzy Pink" Wisowaty, herself a well-known science fiction and Regency literature fan, on September 6, 1969. Niven won the Hugo Award for Best Short Story for Neutron Star in 1967. In 1972, for Inconstant Moon, and in 1975 for The Hole Man. In 1976, he won the Hugo Award for Best Novelette for The Borderland of Sol. Niven has written scripts for various science fiction television shows, including the original Land of the Lost series and Star Trek: The Animated Series, for which he adapted his early Kzin story The Soft Weapon. He adapted his story Inconstant Moon for an episode of the television series The Outer Limits in 1996. He has also written for the DC Comics character Green Lantern including in his stories hard science fiction concepts such as universal entropy and the redshift effect, which are unusual in comic books. http://us.macmillan.com/author/larryn...

Gregory Benford is an American science fiction author and astrophysicist who is on the faculty of the Department of Physics and Astronomy at the University of California, Irvine. As a science fiction author, Benford is best known for the Galactic Center Saga novels, beginning with In the Ocean of Night (1977). This series postulates a galaxy in which sentient organic life is in constant warfare with sentient mechanical life.

Spider Robinson is an American-born Canadian Hugo and Nebula award winning science fiction author. He was born in the USA, but chose to live in Canada, and gained citizenship in his adopted country in 2002. Robinson's writing career began in 1972 with a sale to Analog Science Fiction magazine of a story entitled, The Guy With The Eyes. His writing proved popular, and his first novel saw print in 1976, Telempath. Since then he has averaged a novel (or collection) a year. His most well known stories are the Callahan saloon series.

Works of American science-fiction writer Robert Anson Heinlein include Stranger in a Strange Land (1961) and The Moon Is a Harsh Mistress (1966). People often call this novelist "the dean of science fiction writers", one of the most popular, influential, and controversial authors of "hard science fiction." He set a high standard for science and engineering plausibility and helped to raise the standards of literary quality of the genre. He was the first science-fiction writer to break into mainstream, general magazines such as The Saturday Evening Post, in the late 1940s. He was also among the first authors of bestselling, novel-length science fiction in the modern, mass-market era. Also wrote under Pen names: Anson McDonald, Lyle Monroe, Caleb Saunders, John Riverside and Simon York.

James Patrick Hogan was a British science fiction author. Hogan was was raised in the Portobello Road area on the west side of London. After leaving school at the age of sixteen, he worked various odd jobs until, after receiving a scholarship, he began a five-year program at the Royal Aircraft Establishment at Farnborough covering the practical and theoretical sides of electrical, electronic, and mechanical engineering. He first married at the age of twenty, and he has had three other subsequent marriages and fathered six children. Hogan worked as a design engineer for several companies and eventually moved into sales in the 1960s, travelling around Europe as a sales engineer for Honeywell. In the 1970s he joined the Digital Equipment Corporation's Laboratory Data Processing Group and in 1977 moved to Boston, Massachusetts to run its sales training program. He published his first novel, Inherit the Stars, in the same year to win an office bet. He quit DEC in 1979 and began writing full time, moving to Orlando, Florida, for a year where he met his third wife Jackie. They then moved to Sonora, California. Hogan's style of science fiction is usually hard science fiction. In his earlier works he conveyed a sense of what science and scientists were about. His philosophical view on how science should be done comes through in many of his novels; theories should be formulated based on empirical research, not the other way around. If a theory does not match the facts, it is theory that should be discarded, not the facts. This is very evident in the Giants series, which begins with the discovery of a 50,000 year-old human body on the Moon. This discovery leads to a series of investigations, and as facts are discovered, theories on how the astronaut's body arrived on the Moon 50,000 years ago are elaborated, discarded, and replaced. Hogan's fiction also reflects anti-authoritarian social views. Many of his novels have strong anarchist or libertarian themes, often promoting the idea that new technological advances render certain social conventions obsolete. For example, the effectively limitless availability of energy that would result from the development of controlled nuclear fusion would make it unnecessary to limit access to energy resources. In essence, energy would become free. This melding of scientific and social speculation is clearly present in the novel Voyage from Yesteryear (strongly influenced by Eric Frank Russell's famous story "And Then There Were None"), which describes the contact between a high-tech anarchist society on a planet in the Alpha Centauri system, with a starship sent from Earth by a dictatorial government. The story uses many elements of civil disobedience. James Hogan died unexpectedly from a heart attack at his home in Ireland.