. . through quantum space–time.  Minor Universe 31 is a vast story-space on the outskirts of fiction, where paradox fluctuates like the stock market, lonely sexbots beckon failed protagonists, and time travel is serious business. Every day, people get into time machines and try to do the one thing they should never do: change the past. That’s where Charles Yu, time travel technician—part counselor, part gadget repair man—steps in. He helps save people from themselves. Literally. When he’s not taking client calls or consoling his boss, Phil, who could really use an upgrade, Yu visits his mother (stuck in a one-hour cycle of time, she makes dinner over and over and over) and searches for his father, who invented time travel and then vanished. Accompanied by TAMMY, an operating system with low self-esteem, and Ed, a nonexistent but ontologically valid dog, Yu sets out, and back, and beyond, in order to find the one day where he and his father can meet in memory. He learns that the key may be found in a book he got from his future self. It’s called How to Live Safely in a Science Fictional Universe, and he’s the author. And somewhere inside it is the information that could help him—in fact it may even save his life.

    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.

    E. van Vogt was one of the giants of the 1940s, the Golden Age of classic SF. Of his masterpieces, The World of Null-A is his most famous and most influential. Published in 1949 it was the first major trade SF hardcover, and has been in print in various editions ever since. The entire careers of Philip K. Dick, Keith Laumer, Alfred Bester, Charles Harness, and Philip Jose Farmer were created or influenced by The World of Null-A, and so it is required reading for anyone who wishes to know the canon of SF classics.It is the year 2650 and Earth has become a world of non-Aristotelianism, or Null-A. This is the story of Gilbert Gosseyn, who lives in that future world where the Games Machine, made up of twenty-five thousand electronic brains, sets the course of people's lives. Gosseyn isn't even sure of his own identity, but realizes he has some remarkable abilities and sets out to use them to discover who has made him a pawn in an interstellar plot.

    Heinlein's longest and most ambitious work, it is the story of a man so in love with Life that he refused to stop living it; and so in love with Time that he became his own ancestor.

    Once she was somebody’s enemy. Now the former Canadian special forces warrior lives on the hellish streets of Hartford, Connecticut, in the year 2062. Racked with pain, hiding from the government she served, running with a crime lord so she can save a life or two, Jenny is a month shy of fifty, and her artificially reconstructed body has started to unravel. But she is far from forgotten. A government scientist needs the perfect subject for a high-stakes project and has Jenny in his sights. Suddenly Jenny Casey is a pawn in a furious battle, waged in the corridors of the Internet, on the streets of battered cities, and in the complex wirings of her half-man-made nervous system. And she needs to gain control of the game before a brave new future spins completely out of control.

    Enemy Rix are machine-augmented humans who worship AI compound minds. Separated by light years, bound by an unlikely love, Zai and pacifist senator Nara Oxham face the Rix and hold the fate of the empire.

    This reborn civilization is one in which every individual is incorporated at birth, and spends many years trying to attain control over his or her own life by getting a majority of his or her own shares. Life extension has made life very long indeed.Now the incredible has happened: a billionaire businessman from our time, frozen in secret in the early twenty-first century, is discovered and resurrected, given health and a vigorous younger body. Justin Cord is the only unincorporated man in the world, a true stranger in this strange land. Justin survived because he is tough and smart. He cannot accept only part ownership of himself, even if that places him in conflict with a civilization that extends outside the solar system to the Oort Cloud.  People will be arguing about this novel and this world for decades.

    First published in 1984, the novel's central issues--technology, globalization, gender, sexuality, and multiculturalism--have only become more pressing with the passage of time.The novel's topic is information itself: What are the repercussions, once it has been made public, that two individuals have been found to be each other's perfect erotic object out to "point nine-nine-nine and several nines percent more"? What will it do to the individuals involved, to the city they inhabit, to their geosector, to their entire world society, especially when one is an illiterate worker, the sole survivor of a world destroyed by "cultural fugue," and the other is--you!

    The heavens have been silent since - until a derelict space probe hears whispers from a distant comet. Something talks out there: but not to us. Who to send to meet the alien, when the alien doesn't want to meet? Send a linguist with multiple-personality disorder, and a biologist so spliced to machinery he can't feel his own flesh. Send a pacifist warrior, and a vampire recalled from the grave by the voodoo of paleogenetics. Send a man with half his mind gone since childhood. Send them to the edge of the solar system, praying you can trust such freaks and monsters with the fate of a world. You fear they may be more alien than the thing they've been sent to find - but you'd give anything for that to be true, if you knew what was waiting for them.

    The book opens with Jim bungling a bank job so that he can be arrested and sent to prison, where he plans to learn the art of being a master criminal. Deciding that the Bishop should be his mentor, Jim sets about proving himself worthy of the master's attention. He eventually has to flee his home planet of Bit O' Heaven with the Bishop, but Garth, the Captain of the ship who promised them safe passage, sells them into slavery. The latter part of the book details Jim's adventures on the planet Spiovente, a semi-industrial world fighting feudal wars with weapons smuggled in (against League regulations) by Captain Garth.

    But before humanity arrived, another species had already claimed Grass for its own. It too had developed a culture...... Now a deadly plague is spreading across the stars, leaving no planet untouched, save for Grass. But the secret of the planet's immunity hides a truth so shattering it could mean the end of life itself.

    For the first time in one volume: every word Bruce Sterling has ever written on the Shapers-Mechanists Universe.In the last decade, Sterling has emerged a pioneer of crucial, cutting-edge science fiction. Now Ace Books is proud to offer Sterling's stunning world of the Schismatrix--where Shaper revolutionaries struggle against aristocratic Mechanists for ultimate control of man's destiny. This volume includes the classic full-length novel, Schismatrix, plus thousands of words of mind-bending short fiction.

    Now, as faster-than-light drive opens the stars to exploration, humans are finding other relics of the race they call the Monument-Makers - each different, and each heartbreakingly beautiful. But except for a set of footprints on Jupiter's moon Iapetus, there is no trace of the enigmatic race that has left them behind. Then a team of scientists working on a dead world discover an ominous new image of the Monument-Makers. Somehow it all fits with other lost civilizations, and possibly with Earth's own future. And distant past. But Earth itself is on the brink of ecological disaster - there is no time to search for answers. Even to a question that may hold the key to survival for the entire human race...

    An emergency skeleton crew sees only one chance for survival: to create an artificial consciousness in the Earthling's primary computer, which could guide them to their destination . . . or could destroy the human race. Frank Herbert's classic novel that begins the epic Pandora Sequence (written with Bill Ransom), which also includes The Jesus Incident, The Lazarus Effect, and The Ascension Factor.

    Just another day in the Dilemma Prison. Rescued by the mysterious Mieli and her flirtatious spacecraft, Jean is taken to the Oubliette, the Moving City of Mars, where time is a currency, memories are treasures, and a moon-turned-singularity lights the night. Meanwhile, investigator Isidore Beautrelet, called in to investigate the murder of a chocolatier, finds himself on the trail of an arch-criminal, a man named le Flambeur...Indeed, in his many lives, the entity called Jean le Flambeur has been a thief, a confidence artist, a posthuman mind-burgler, and more. His origins are shrouded in mystery, but his deeds are known throughout the Heterarchy, from breaking into the vast Zeusbrains of the Inner System to stealing rare Earth antiques from the aristocrats of Mars. In his last exploit, he managed the supreme feat of hiding the truth about himself from the one person in the solar system hardest to hide from: himself. Now he has the chance to regain himself in all his power—in exchange for finishing the one heist he never quite managed.The Quantum Thief is a breathtaking joyride through the solar system several centuries hence, a world of marching cities, ubiquitous public-key encryption, people who communicate via shared memory, and a race of hyper-advanced humans who originated as an MMORPG guild. But for all its wonders, The Quantum Thief is also a story powered by very human motives of betrayal, jealousy, and revenge.