What if...a machine could murder one person while implicating another for the crime? An alien being looked like livestock but spoke like a philosopher? Earth was ruined by war, and Mars was humanity's only hope? Robots were created to wage an unending war on the ravaged surface of Earth while man hid underground? Peeking into the future showed a worse result with each look?

Ed Fletcher is a real estate agent with a normal life, until one day he leaves the house for work a few minutes later than he should have. He arrives at a terrifying, grey, ash world. Ed rushes home and tells his wife, Ruth, who goes back to the office with him. When they return, everything is normal. But he soon realizes people and objects have subtly changed.

When Dr. Jim Parsons awakens after a car accident, he finds himself in a future populated almost entirely by the young. But for the young to keep running the world, death is fetishized, and those who survive to old age are put down. In such a world, Parsons - with his innate desire to save lives - is a criminal and an outcast. For one revolutionary group, however, he may be just the savior they need to heal and revive their cryogenically frozen leader.

In Our Friends from Frolix 8, the world is run by an elite few. And what determines whether one is part of the elite isn’t wealth or privilege, but brains. As children, every citizen of Earth is tested; some are found to be super-smart New Men and some are Unusuals with various psychic powers. The vast majority are Undermen, performing menial jobs in an overpopulated world.

Sometimes even gods need help. In Galactic Pot-Healer that god is an alien creature known as the Glimmung, which looks alternately like a flaming wheel, a teenage girl, and a swirling mass of ocean life. In order to raise a sunken city, he summons beings from across the galaxy to Plowman’s Planet. Joe Fernwright is one of those summoned, needed for his skills at pot-healing - repairing broken ceramics. But from the moment Joe arrives on Plowman’s Planet, things start to go awry. Is the Glimmung good or evil?

After the 20th century’s devastating series of wars, the world’s governments banded together into one globe-spanning entity, committed to peace at all costs. Ensuring that peace is the Vulcan supercomputer, responsible for all major decisions. But some people don’t like being taken out of the equation. And others resent the idea that the Vulcan is taking the place of God. As the world grows ever closer to all-out war, one functionary frantically tries to prevent it. But the Vulcan computer has its own plans....

For years, the third moon in the Alphane system was used as a psychiatric hospital. But when war broke out between Earth and the Alphanes, the hospital was left unguarded and the inmates set up their own society, made up of competing factions based on their particular mental illnesses. When Earth sends a delegation to take back the colony, they find enclaves of depressives, schizophrenics, paranoiacs, and others uniting to repel what they see as a foreign invasion.

Delmak-O is a dangerous planet. Though there are only 14 citizens, no one can trust anyone else and death can strike at any moment. The planet is vast and largely unexplored, populated mostly by gelatinous cube-shaped beings that give cryptic advice in the form of anagrams. Deities can be spoken to directly via a series of prayer amplifiers and transmitters, but they may not be happy about it. And the mysterious building in the distance draws all the colonists to it, but when they get there each sees a different motto on the front.

Floyd Jones has always been able to see exactly one year into his future, a gift and curse that began one year before he was even born. As a fortuneteller at a post-apocalyptic carnival, Jones is a powerful force, and may be able to free society from its paralyzing Relativism. If, that is, he can avoid the radioactively unstable government hit man on his tail.

When a repairman accidentally discovers a parallel universe, everyone sees it as an opportunity, whether as a way to ease Earth’s overcrowding, set up a personal kingdom, or hide an inconvenient mistress. But when a civilization is found already living there, the people on this side of the crack are sent scrambling to discover their motives. Will these parallel humans come in peace? Or are they just as corrupt and ill-intentioned as the people of this world?

In the future, most of humanity lives in massive underground bunkers, producing weapons for the nuclear war they’ve fled. Constantly bombarded by patriotic propaganda, the citizens of these industrial anthills believe they are waiting for the day when the war will be over and they can return above ground. But when Nick St. James, president of one anthill, makes an unauthorized trip to the surface, what he finds is more shocking than anything he could imagine.

They mustn't harm a human being, they must obey human orders, and they must protect their own existence...but only so long as that doesn't violate rules one and two. With these Three Laws of Robotics, humanity embarked on a bold new era of evolution that would open up enormous possibilities, and unforeseen risks.

In the year AD 3000, Earth is a dystopian wasteland, plundered of its natural resources by alien conquerors known as Psychlos. Fewer than 35,000 humans survive in a handful of communities scattered across the face of a post-apocalyptic Earth. From the ashes of humanity rises a young hero, Jonnie Goodboy Tyler. Setting off on an initial quest to discover a hidden evil, Jonnie unlocks the mystery of humanity’s demise and unearths a crucial weakness in their oppressors.

From early work like "Rescue Party" and "The Lion of Comarre", through classic stories including "The Star", "Earthlight", "The Nine Billion Names of God", and "The Sentinel" (kernel of the later novel and movie 2001: A Space Odyssey), all the way to later work like "A Meeting with Medusa" and "The Hammer of God", this comprehensive short story collection encapsulates one of the great science fiction careers of all time.

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.

Ed Fletcher is a real estate agent with a normal life, until one day he leaves the house for work a few minutes later than he should have. He arrives at a terrifying, grey, ash world. Ed rushes home and tells his wife, Ruth, who goes back to the office with him. When they return, everything is normal. But he soon realizes people and objects have subtly changed.

In this prequel to Eon, Greg Bear continues to explore the possibilities presented by the asteroid Thistledown, a remnant of a lost human civilization. The Way is a tunnel through space and time that leads to other worlds, some more like planet Earth than Earth itself. It is perhaps the most formidable discovery in Thistledown and with it come disputes as to the nature of the Way and how it should be used. The Way can be reached only through Axis City, the only space station of Thistledown.

Jan Kulozik was one of Earth's privileged elite. A brilliant young electronics engineer, he enjoyed all the blessings of a twenty-third-century civilization that survived global collapse and conquered the starts, unaware of the millions who slaved or starved to maintain his way of life. Then Jan met Sara, a beautiful agent of the rebel underground dedicated to smashing Earth's rigid caste system. Through her he discovered the truth behind the lies he'd been taught.

In Antarctica, a research expedition discovers an ancient structure buried deep in the ice. In Indonesia, a genetics researcher identifies a breakthrough treatment for autism. But these two incredible discoveries aren't what they seem. They will set off a race to unravel the deepest secrets of human existence—the true history of human origins. And an event that could change humanity forever.

They first appear as a series of dots on astronomical plates, heading from Saturn directly toward Earth. Since the ringed planet carries no life, scientists deduce the mysterious ship to be a visitor from another star. The world's frantic efforts to signal the aliens go unanswered. The first contact is hostile: the invaders blast a Soviet space station, seize the survivors, and then destroy every dam and installation on Earth with a hail of asteriods.

They are the Voltarians of Voltar - an empire 110 planets strong. They are already among us. And the invasion is about to begin...in a hundred years or so. Or is it? The truth is far more sinister. Undercover, underground, and out of sight, the invaders plan what may in fact be a massive diversion. In the darkest recesses of Voltar’s Coordinated Information Apparatus (otherwise known as the CIA), a tyrant of terror sets out to exploit the invasion in order to seize power. All that stands in his way is a planet that doesn’t exist.

Moth was a beautiful planet, the only one with wings - two great golden clouds suspended in space around it. Here was a wide-open world for any venture a man might scheme. The planet attracted unwary travelers, hardened space-sailors, and merchant buccaneers - a teeming, constantly shifting horde that provided a comfortable income for certain quick-witted fellows like Flinx and his pet flying snake Pip.

They mustn't harm a human being, they must obey human orders, and they must protect their own existence...but only so long as that doesn't violate rules one and two. With these Three Laws of Robotics, humanity embarked on a bold new era of evolution that would open up enormous possibilities, and unforeseen risks.

A deadly cloud of spores has already infected and killed the inhabitants of two worlds. Now the plague is heading for Earth, threatening humans and aliens alike. Can either species be trusted to find the cure? Geneticist Marianne Jenner is immersed in the desperate race to save humanity, yet her family is tearing itself apart. Siblings Elizabeth and Ryan are strident isolationists who agree only that an alien conspiracy is in play. Marianne's youngest, Noah, is a loner addicted to a drug that constantly changes his identity.

It isn’t easy to get a group of bestselling SF authors to write new stories for an anthology, but that’s what Elizabeth Anne Hull has done in this powerhouse book. With original, captivating tales by Greg Bear, Gregory Benford, Ben Bova, David Brin, Cory Doctorow, Neil Gaiman, Joe Haldeman, Harry Harrison, Larry Niven, Vernor Vinge, Gene Wolfe, and others, Gateways is a SF event that will be a must-buy for SF readers of all tastes, from the traditional to the cutting edge; from the darkly serious to the laugh-out-loud funny.

Aliens are spying on Earth from one of the four worlds that make up the Warden Diamond. But it is impossible to send agents to any of the four worlds because of unique microscopic symbionts that make it impossible for visitors to leave the Diamond. Seeking a unique solution, each of the four worlds making up the Diamond is sent a person whose mind has been stripped of everything and who is now controlled by an agent of the Confederacy. Lilith is the first planet to be visited.

On June 30, 1908, an object fell from the sky, releasing more energy than a thousand Hiroshima bombs. A Siberian forest was flattened, but the strike left no significant crater. The anomaly came to be known as the Tunguska Event, and scientists have never agreed whether it was the largest meteor strike in recorded history - or something else. Alien artifacts have been uncovered since the 1908 event, and a new star drive is discovered.

In Jasper Fforde's Great Britain, circa 1985, time travel is routine, cloning is a reality (dodos are the resurrected pet of choice), and literature is taken very, very seriously. England is a virtual police state where an aunt can get lost (literally) in a Wordsworth poem and forging Byronic verse is a punishable offense. All this is business as usual for Thursday Next, renowned Special Operative in literary detection.

Boss loves to dive historical ships, derelict spacecraft found adrift in the blackness between the stars. Sometimes she salvages for money, but mostly she's an active historian. She wants to know about the past--to experience it firsthand. Once she's dived the ship, she'll either leave it for others to find or file a claim so that she can bring tourists to dive it as well. It's a good life for a tough loner, with more interest in artifacts than people.

The first book in an action–packed new SF adventure series. Vulcan is a factory planet, centuries old, Company run, ugly as sin, and unfeeling as death. Vulcan breeds just two types of native: complacent or tough. Sten is tough. When his family is killed in a mysterious accident, Sten rebels, harassing the Company from the metal world’s endless maze-like warrens. He could end up just another burnt–out Delinquent. But people like Sten never give up.