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.

    In this lost colony the inhabitants had forgotten the very existence of earth. Only one man remembered. He foresaw the awesome consequences if this paradise were ever rediscovered.MonumentThe novel of a frightening future - a planet in mortal combat with an alien universe.

    It is larger than many planets, housing thousands of alien races and just as many secrets.Now one of those secrets has been discovered: at the center of the Ship is . . . a planet. Marrow. But when a team of the Ship's best and brightest are sent down to investigate, will they return with the origins of the Ship--or will they bring doom to everyone on board?Robert Reed, whose fantastic stories have been filling all the major SF magazines for the past several years, spins a captivating tale of adventure and wonder on an incredible scale in this novel based on his acclaimed novella.

    At the end of his life he becomes reclusive and cantankerous, refusing to appear before or interact with his legion of fans. Little did anyone know, Nathan was putting into motion his true, timeless legacy.Convinced that humanity cannot survive on Earth, his Arkwright Foundation dedicates itself to creating a colony on an Earth-like planet several light years distant. Fueled by Nathan's legacy, generations of Arkwrights are drawn together, and pulled apart, by the enormity of the task and weight of their name.

    A proposed major software upgrade - an artificial intelligence - will give the system an unprecedented degree of independent decision-making, but serious questions are raised in regard to how much control can safely be given to a non-human intelligence. In order to more fully assess the system, a new space-station habitat - a world in miniature - is developed for deployment of the fully operational system, named Spartacus. This mini-world can then be "attacked" in a series of escalating tests to assess the system's responses and capabilities. If Spartacus gets out of hand, the system can be shut down and the station destroyed... unless Spartacus decides to take matters into its own hands and take the fight to Earth.

    He was the first man to see a Martian...but he wasn't the last!It was estimated that a billion of them had arrived, one to every three human beings on Earth—obnoxious green creatures who could be seen and heard, but not harmed and who probed private sex lives as shamelessly as they probed government secrets.No one knew why they had come. No one knew how to make them go away—except, perhaps, Luke Devereaux. Unfortunately Devereaux was going slightly bananas, so it wouldn't be easy.But for a science-fiction writer nothing was impossible...

    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.

    Instead, it evolved into the Machine Plague, killing nearly five billion people and changing life on Earth forever.The nanotech has one weakness: it self-destructs at altitudes above ten thousand feet. Those few who've managed to escape the plague struggle to stay alive on the highest mountains, but time is running out—there is famine and war, and the environment is crashing worldwide. Humanity's last hope lies with a top nanotech researcher aboard the International Space Station—and with a small group of survivors in California who risk a daring journey below the death line...

    Julius believes the sites of the ancients, placed all around the globe, represent ancient pieces of a puzzle linked to the salvation of our species.Miami, September 2012: Psychology Dominique Vazquez is assigned a special patient-Mick Gabriel, a paranoid schizophrenic with a high IQ who attempts to charm her into believing his father's theories of the Apocalypse so he can escape.Fall Equinox: As it has done for a thousand years, a serpent's shadow appears on the northern balustrade of the Kukulcan Pyramid . . . a rare galactic alignment occurs, and a space transmission reaches Earth.It is the beginning of the end . . .

    The continuous beats of a pulsar have become odd, irregular…artificial. It can only be a code.Frantically, a research team struggles to decipher the alien communication. And what the scientists discover is destined to shake the foundations of empires around this world—from Wall Street to the Vatican

    Electronic devices, cars, industries stopped. The lights went out. Any technology more complicated than a lever or pulley simply wouldn't work. A new set of rules took its place—laws that could only be called magic. Ninety-nine percent of humanity has simply vanished. Cities lie abandoned. Supernatural creatures wander the silenced achievements of a halted civilization.Pete Garey has survived the Change and its ensuing chaos. He wanders the southeastern United States, scavenging, lying low. Learning. One day he makes an unexpected friend: a smartassed unicorn with serious attitude. Pete names her Ariel and teaches her how to talk, how to read, and how to survive in a world in which a unicorn horn has become a highly prized commodity.When they learn that there is a price quite literally on Ariel's head, the two unlikely companions set out from Atlanta to Manhattan to confront the sorcerer who wants her horn. And so begins a haunting, epic, and surprisingly funny journey through the remnants of a halted civilization in a desolated world.

    The planet provides a lush but inexplicable landscape--trees offer edible, addictive fruit one day and poison the next, while the ruins of an alien race are found entwined in the roots of a strange plant. Conflicts between generations arise as they struggle to understand one another and grapple with an unknowable alien intellect.

    But that’s what backup hard drives are for. And Li should know; she’s been hacking her memory for fifteen years in order to pass as human. But no memory upgrade can prepare Li for what she finds on Compson’s World: a mining colony she once called home and to which she is sent after a botched raid puts her on the bad side of the powers that be. A dead physicist who just happens to be her cloned twin. A missing dataset that could change the interstellar balance of power and turn a cold war hot. And a mining “accident” that is starting to look more and more like murder...Suddenly Li is chasing a killer in an alien world miles underground where everyone has a secret. And one wrong turn in streamspace, one misstep in the dark alleys of blackmarket tech and interstellar espionage, one risky hookup with an AI could literally blow her mind.

    or awaken an ancient evil and destroy all life in the galaxy.The shady crew of the White Raven run freight and salvage at the fringes of our solar system. They discover the wreck of a centuries-old exploration vessel floating light years away from its intended destination and revive its sole occupant, who wakes with news of First Alien Contact. When the crew break it to her that humanity has alien allies already, she reveals that these are very different extra-terrestrials... and the gifts they bestowed on her could kill all humanity, or take it out to the most distant stars. File Under: Science Fiction

    This would have worked out better for all involved if they hadn’t arrived after a mutated plague wiped out half the planet, turned the rest into shambling, near-unstoppable animals, and basically destroyed human civilization. You know—your standard apocalypse. The Krakau’s first impulse was to turn their ships around and go home. After all, it’s hard to establish diplomatic relations with mindless savages who eat your diplomats. Their second impulse was to try to fix us. A century later, human beings might not be what they once were, but at least they’re no longer trying to eat everyone. Mostly.Marion “Mops” Adamopoulos is surprisingly bright (for a human). As a Lieutenant on the Earth Mercenary Corps Ship Pufferfish, she’s in charge of the Shipboard Hygiene and Sanitation team. When a bioweapon attack by an alien race wipes out the Krakau command crew and reverts the rest of the humans to their feral state, only Mops and her team are left with their minds intact.Escaping the attacking aliens—not to mention her shambling crewmates—is only the beginning. Sure, Mops and her assortment of space janitors and plumbers can clean the ship, but flying the damn thing is another matter. As they struggle to keep the Pufferfish functioning and find a cure for their crew, they stumble onto a conspiracy that could threaten the entire alliance.A conspiracy born from the truth of what happened on Earth all those years ago…