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.

    The ugly, the flawed, the misfit, the deformed, they are the unwanted, flung to the farthest corners of the galaxy to investigate hostile planets and strange, vicious creatures. Out there, there are a thousand different -- and terrible -- ways to die. Festina Ramos belongs to the well-trained, always-dwindling ranks of ECMs (Expendable Crew Members). Now she and her partner, Yarrun Derigha, have been ordered to escort the unstable Admiral Chee to Melaquin -- the feared "Planet of No Return"-- which has swallowed up countless Explorers before them without a trace.Obviously, this is meant to be the last mission for Ramos and Derigha. But it won't be, if Festina can help it.

    Whether it wanted to or not. When the Amplitur and their allies stumbled upon the races called the Weave, the Purpose seemed poised for a great leap forward. But the Weave's surprising unity also gave it the ability to fight the Amplitur and their cause. And fight it did, for thousands of years.Will Dulac was a New Orleans composer who thought the tiny reef off Belize would be the perfect spot to drop anchor and finish his latest symphony in solitude. What he found instead was a group of alien visitors, a scouting party for the Weave, looking for allies among what they believed to be a uniquely warlike race, Humans.Will tried to convince the aliens that Man was fundamentally peaceful, for he understood that Human involvement would destroy the race. But all too soon, it didn't matter. The Amplitur had discovered Earth...

    Clinging to its skin are the zones, a series of semi-autonomous city-states, each of which enjoys a different—and rigidly enforced—level of technology. Horsetown is pre-industrial; in Neon Heights they have television and electric trains . . .Following an infiltration mission that went tragically wrong, Quillon has been living incognito, working as a pathologist in the district morgue. But when a near-dead angel drops onto his dissecting table, Quillon's world is wrenched apart one more time, for the angel is a winged posthuman from Spearpoint's Celestial Levels—and with the dying body comes bad news.If Quillon is to save his life, he must leave his home and journey into the cold and hostile lands beyond Spearpoint's base, starting an exile that will take him further than he could ever imagine. But there is far more at stake than just Quillon's own survival, for the limiting technologies of the zones are determined not by governments or police, but by the very nature of reality—and reality itself is showing worrying signs of instability . . .Terminal World is a snarling, drooling, crazy-eyed mongrel of a book: equal parts steampunk, western, planetary romance, and far-future SF.

    In Sargasso of Space, the Solar Queen free traders win exclusive rights to trade with the planet Limbo, but the crew arrives to find most of the planet’s surface charred, with little signs of life. They find a valley with life, but others may still lurk. Worse yet, a strange force threatens to cripple the Queen. They must solve the planet’s mysteries if they hope to escape not only with tradable goods, but their lives.First of the "Solar Queen" adventures, originally published under the pseudonym "Andrew North." This is the second ace edition.

    Here histories, empires, and continents meet and cross. It is the mid-twenty first century and Turkey is a proud and powerful member of a European Union that runs from the Atlantic to Mt. Ararat.In the sleepy Istanbul district of Eskiköy stands the former whirling dervish house of Adem Dede. Six characters' lives revolve around it.A retired economist from the Greek community is hired into a top-security think tank, but keeps a dark secret from another century.A nine-year-old boy, confined to a silent world by a heart condition where any sudden sound could kill him, becomes a reluctant detective.A rogues trader sets up the deal o the century smuggling contraband gas but discovers it's only the tip of an iceberg of corporate fraud.An art dealer takes an offer she can't refuse--a genuine legend of old Istanbul--and finds herself swept up in ancient intrigues and rivalries.A slacker finds his life forever changed after an act of urban terrorism gives him the ability to see djinn--and they're just the start.A young marketing graduate has five days to save a family nanotechnology start-up with a new product that may just change the world. Over the space of five days of an Istanbul heat wave, these lives weave a story of corporate wheeling and dealing, Islamic mysticism, political and economic intrigues, ancient Ottoman mysteries, a terrifying new terrorist threat, and a nanotechnology with the potential to transform every human on the planet.

    Humanity flows away from Earth, into space, and in time forgets our home world and creates a new empire, the Interdependency, whose ethos requires that no one human outpost can survive without the others. It’s a hedge against interstellar war -- and a system of control for the rulers of the empire.The Flow is eternal -- but it is not static. Just as a river changes course, The Flow changes as well, cutting off worlds from the rest of humanity. When it’s discovered that The Flow is moving, possibly cutting off all human worlds from faster than light travel forever, three individuals -- a scientist, a starship captain and the Empress of the Interdependency -- are in a race against time to discover what, if anything, can be salvaged from an interstellar empire on the brink of collapse.

    Only a few scientists even suspected its presence, and then, suddenly and silently, it arrived, dwarfing and threatening the Moon and wreaking havoc on Earth's tides and weather. Though the Wanderer is stopping in the solar system only to refuel, its mere presence is catastrophic. A tense, thrilling, and towering achievement. Winner of the Hugo Award for Best SF Novel of the Year!