Sending young people on extraordinary adventures in which they discover their worlds and themselves is one of science fiction's grand traditions.

Armchair fiction presents extra large paperback editions of the best in classic science fiction novels. "Search the Sky" is by two of science fiction's best known authors--Frederik Pohl and C. M. Kornbluth. Ross wanted off. He had been born and had spent his life on Halsey's Planet, far beyond our universe. But something was wrong with the society there, something he couldn't quite name--a feeling of breakdown and detrition. Then one of the rare spaceships came through from Earth, after a journey of several hundred years. When the descendents of the original crew stepped out and told their story, the spark was provided and Ross was off on a mission. Other planets in these outer reaches--also peopled by colonists from Earth--had failed to respond to the spaceship's signals. Maybe the breakdown on Halsey had already affected them. Ross was given the chance to find out. It was an odd mission. He didn't even know what he was looking for. But he had to go.

The father of modern computer science, Alan Turing paves the way for esoteric mathematical computations that, when used by Nazi Germany

"This future history of the next thirty years, imagined by bestselling author Thomas Harding, is surprising, compelling and disturbingly believable. In 2020, a researcher is shocked to find a set of notebooks detailing the history of the next thirty years. Is this a hoax? Or could it be real? The notebooks, written in the year 2050, contain interview transcripts between teenage Billy and Gran Nancy. We learn about the great climate SHOCK, when global temperatures rise much faster than anticipated, resulting in catastrophic consequences for humanity. We learn about a shift away from democracy, toward unelected "ethnarchs" -- heads of corporations who use their access to our personal data to competently run the world. We learn about the giant city towers where most people live, work and play inside -- where it's safe from natural disasters and viral outbreaks. And between these interviews, we learn more about Billy, whose interest in the history that has been erased from the official record is causing trouble in 2050. Is it too late to change the past to save the future?"--Publisher's description.

Valley of Dreams is set on Mars and is the sequel to Weinbaum's highly regarded "A Martian Odyssey." It takes place shortly after the events recounted in the first story with many of the same characters. A hopeful story about a Mars that never was. Join Dick Jarvis and "Frenchy" Leroy as they explore an ancient Martian city and make unexpected discoveries.

Marc Mathieu is a brilliant creator -- a scientist whose experiments have led him to the very essence of man's life-energy. Leading a team of top French physicists, Mathieu develops a method to capture and harness this incredible life-force as it escapes from a man's body at the moment of death. The result is the gasp: a pulsating sphere of energy that looks as harmless as a ping-pong ball but contains a power source that makes the atom obsolete.

"Five are chosen for the first mission to Mars; a top-gun Air Force pilot, a tomboy chief engineer, a brilliant scientist, a Texas geologist, and an adventurous historian. In spite of clashing egos and personal friction, the crew of the ship Beagle makes history by becoming the first humans to walk upon the Red Planet."--Jacket.

From Hugo and Nebula Award-winning author Robert Silverberg comes, To Open The Sky. The Atom was their God-but there was something stronger... At the beginning of the 22nd century, Earth colonies were established on Mars and Venus. But the ultimate dream - to travel to the stars - was still an impossibility. Cults, fads, madnesses of various kinds swept the population. The maddest--and so far the most permanent--were the Vorst worshipers, the atom adorers, the believers in immortality through technology. Yet there were the Harmonists, who believed that technology could never do it. And the hatred between the two factions was too deep to be reconciled - until a conflict on Venus between a Vorster priest and his Harmonist opponent resulted in unexpected developments.

From multiple Hugo and Nebula Award-winning author Robert Silverberg, Roma Eterna takes an in-depth look at an alternative history in which the Roman Empire survives into the twenty-first century and beyond. What would happen if Imperial Rome never fell? Roma Eterna, spanning fifteen hundred years of global history, follows the reign of the Roman Empire from its inception to the present day. Empire continues to expand, creeping across the globe and through the annals of history from the conquest of the Mayans to the first circumnavigational voyage, and finally the attempt of the Hebrews to flee Rome's tyranny by escaping to another planet. Originally published as a series of short stories, Roma Eterna presents a powerful new world written by an endlessly imaginative writer.

Crompton separated as a child from his two conflicting personalities, locates his lost egos and attempts to reintegrate himeslf.

When I was fourteen, a cousin of mine angered a Malignant One. It was a big case, a genuine scandal. Maybe you remember it. At the time, when it ended, I just wanted to forget about the whole thing. But a couple of years have passed and I guess maybe it's time to think about it again. Thus begins Ellen Pierson's story of how she helped her cousin Paul contend with the Malignant One running a temp agency in the office building where he worked. Ellen's story is a bright and moving tale set in the same fabulous, fantastic America as that of Rachel Pollack's award-winning Unquenchable Fire. Funny and frantic, poignant and powerful, Temporary Agency is an enduring fable from a writer whose work, in the words of Orson Scott Card, like a river in flood, resists the well-channeled ways, cutting its own channel through the fictional terrain.

While attending the revels of the League for Archaic Pleasurs, a group dedicated to the pleasures of the medieval period, Joe Farrell comes face-to-face with Nicholas Bonner, a spirit from the past and an ancient evil.

The spirit of a man named Sam, who died unexpectedly, inhabits the body of his beloved cat and communicates with his best friend, Jacob, and the woman he loved, Emilia.

Roll Call: The Crew of the U.S.S. Excalibur: Captain Mackenzie Calhoun: An unorthodox, decisive young captain who loves his crew and his ship, and loves testing their limits even more. Commander Shelby: A woman of strong opinions and strong values, Shelby never hesitated to tell her captains when she thought they were wrong, and Mackenzie Calhoun won't be any exception. Burgoyne 172: The chief engineer of the Excalibur, with the decisiveness of Calhoun, the strength of Shelby, and the gender of both.Burgoyne is a Hermat, and when s/he sets his/her sights on you, s/he isn't an easy...person...to refuse. As the Thallonian Empire succumbs to violence and insurrection, the U.S.S. Excalibur prepares to launch on her humanitarian mission of mercy.But her departure is destined to be a memorable one, as Calhoun contends with an unexpected stowaway, a stormy relationship with his crew, and -- light-years away -- frightened refugees aboard a dying ship.

Nothing could have prepared Captain Calhoun for simultaneous threats from the D'myurj, bent on the domination or destruction of humanity, and Morgan Primus, a sophisticated computer simulation taking up residence within the very core of the U.S.S. Excalibur.

Under the best circumstances, terraforming is a tough, dangerous task that pits the hardiest of pioneers against an unforgiving environment. When the terraformers on the planet Paradise fall behind schedule, commander Riker is given temporary leave from the U.S.S. Enterprise(TM) and sent to assist. Riker's replacement on the Starship Enterprise is a volatile officer named Stone whose behavior soon raises questions about his ability and his judgment. Meanwhile, Commander Riker has become enmeshed in a life and struggle with Paradise's brutal landscape. However, he soon learns that not all of the planet's dangers are natural in origin -- as he comes face to face with Paradise's greatest danger and most hideous secret.

Mass Market Paperback, movie tie-in, "Can the world exist half-ape and half-human?" Based upon characters created by Pierre Boulle. When it was discovered that the fantastic Planet of the Apes was their own Earth, it was only the beginning of the most incredible adventure of all time...

Ahab Goldstein is a seventh-grader living in an United States (specifically Maine) where the environment has turned toxic, and the corrupt Environmental Police Force is in control, limiting access to natural resources like gas and water, issuing fines, and transporting "fragile" species (pretty much all of them) to the Center for Species Rehabilitation in New Arcadia (a dubious refuge at best); so when Ahab and his friends find a real live bullfrog on an island in the toxic harbor, possibly the last one in America, they are faced with a choice--turn it over (NO!), leave it alone, or bike to Canada to find it a mate.