Rails must be freshly laid ahead of the city & carefully removed in its wake. Rivers & mountains present nearly insurmountable challenges to the ingenuity of the city's engineers. But if the city does not move, it will fall farther & farther behind the optimum & into the crushing gravitational field that has transformed life on Earth. The only alternative to progress is death. The secret directorate that governs the city makes sure that its inhabitants know nothing of this. Raised in common in creches, nurtured on synthetic food, prevented above all from venturing outside the closed circuit of the city, they're carefully sheltered from the dire necessities that have come to define human existence. Yet the city is in crisis. People are growing restive. The population is dwindling. The rulers know that, for all their efforts, slowly but surely the city is slipping ever farther behind the optimum. Helward Mann is a member of the city's elite. Better than anyone, he knows how tenuous is the city's continued existence. But the world he's about to discover is infinitely stranger than the strange world he believes he knows so well.

    Earth scientist Rocannon is on that world, and he sees his friends murdered and his spaceship destroyed. Marooned among alien peoples, he leads the battle to free this new world - and finds that legends grow around him even as he fights.

    First published in 1966, Harrison's novel of an overpopulated urban jungle, a divided class system—operating within an atmosphere of riots, food shortages, and senseless acts of violence—and a desperate hunt for the truth by a cynical NYC detective tells a classic tale of a dark future.

    Miles Bennell discovered an insidious, horrifying plot. Silently, subtly, almost imperceptibly, alien life-forms were taking over the bodies and minds of his neighbors, his friends, his family, the woman he loved—the world as he knew it. First published in 1955, this classic thriller of the ultimate alien invasion and the triumph of the human spirit over an invisible enemy inspired three major motion pictures.

    It doesn't appear as a standalone work, but is included with several collections. The story is a prequel to the events in The Hitchhiker's Guide To The Galaxy and has the young Zaphod Beeblebrox working as a salvage ship operator. He guides some bureaucrats to a crashed spaceship which may be leaking some hazardous materials. The bureaucrats are determined to "make it safe". The comic asides in the story include some of the time travel paradoxes which are a common running theme in Adams' SF work, and plenty of material about lobsters

    Avalon seems perfect, a verdant, livable world still in its prehistoric age. The biologists and engineers who busy themselves planting and building scoff at the warnings of professional soldier Cadmann Weyland until a large, unnaturally fast and cunning predator begins stalking the colony. Learning how to kill the beast is only the first step, for they must then reevaluate their entire understanding of Avalon's ecology.

    The sombre story of a group of people in their fifties who face the fact that there is no younger generation coming to replace them; instead nature is rushing back to obliterate the disaster they have brought on themselves.

    In the years between the first two Bugger Wars, the Hegemony is desperate to recruit brilliant military commanders to repel the alien invasion. They may have found their man--or boy--in John Paul Wiggin....In "Teacher's Pest"-a novella written especially for this collection--a brilliant but arrogant John Paul Wiggin, now a university student, matches wits with an equally brilliant graduate student. "The Investment Counselor" is set after the end of the Bugger Wars. Banished from Earth and slandered as a mass murderer, twenty-year-old Andrew Wiggin wanders incognito from planet to planet as a fugitive--until a blackmailing tax inspector compromises his identity and threatens to expose Ender the Xeoncide. Also reprinted here is the original award-winning novella, "Ender's Game," which first appeared in 1977.

    Anderson * Doug Beason * M. Shayne Bell * David Bischoff * A.C.Crispin * Kenneth C. Flint * Barbara Hambly * Rebecca Moesta * Daniel KeysMoran * Jerry Oltion * Judith & Garfield Reeves-Stevens * Jennifer Roberson* Kathy Tyers * Tom Veitch & Martha Veitch * Dave Wolverton * TimothyZahn

    It is to some extent a science fiction coming-of-age story, focused on a young girl named Nell, and set in a future world in which nanotechnology affects all aspects of life. The novel deals with themes of education, social class, ethnicity, and the nature of artificial intelligence.

    A reluctant conscript drafted into an elite Military unit, Private William Mandella has been propelled through space and time to fight in the distant thousand-year conflict; to perform his duties without rancor and even rise up through military ranks. Pvt. Mandella is willing to do whatever it takes to survive the ordeal and return home. But "home" may be even more terrifying than battle, because, thanks to the time dilation caused by space travel, Mandella is aging months while the Earth he left behind is aging centuries.

    Did some cryptic patron race begin the job long ago, then abandon us? Or did we leap all by ourselves? That question burns, yet a greater mystery looms ahead, in the furnace of a star. Under the caverns of Mercury, Expedition Sundiver prepares for the most momentous voyage in our history – into the boiling inferno of the sun, seeking our destiny in the cosmic order of life.

    Anderson. Working from Frank Herbert's own notes, the acclaimed authors reveal the chapter of the Dune saga most eagerly anticipated by readers: the Butlerian Jihad.Throughout the Dune novels, Frank Herbert frequently referred to the war in which humans wrested their freedom from "thinking machines." In Dune: The Butlerian Jihad, Brian Herbert and Kevin J. Anderson bring to life the story of that war, a tale previously seen only in tantalizing hints and clues. Finally, we see how Serena Butler's passionate grief ignites the struggle that will liberate humans from their machine masters; here is the amazing tale of the Zensunni Wanderers, who escape bondage to flee to the desert world where they will declare themselves the Free Men of Dune. And here is the backward, nearly forgotten planet of Arrakis, where traders have discovered the remarkable properties of the spice melange....

    Coveted across the known universe, melange is a prize worth killing for...When House Atreides is betrayed, the destruction of Paul’s family will set the boy on a journey toward a destiny greater than he could ever have imagined. And as he evolves into the mysterious man known as Muad’Dib, he will bring to fruition humankind’s most ancient and unattainable dream.***Original, first edition from 1965 can be found here.

    A Fire upon the Deep is the big, breakout book that fulfills the promise of Vinge's career to date: a gripping tale of galactic war told on a cosmic scale.Thousands of years hence, many races inhabit a universe where a mind's potential is determined by its location in space, from superintelligent entities in the Transcend, to the limited minds of the Unthinking Depths, where only simple creatures and technology can function. Nobody knows what strange force partitioned space into these "regions of thought," but when the warring Straumli realm use an ancient Transcendent artifact as a weapon, they unwittingly unleash an awesome power that destroys thousands of worlds and enslaves all natural and artificial intelligence.Fleeing the threat, a family of scientists, including two children, are taken captive by the Tines, an alien race with a harsh medieval culture, and used as pawns in a ruthless power struggle. A rescue mission, not entirely composed of humans, must rescue the children-and a secret that may save the rest of interstellar civilization.