No one knows where they are from. Some think it is the start of an alien invasion. Others credit God. When the old and the sick go through these gates, they become young again and their illnesses disappear. But there are several problems! Not everyone makes it through the first time. Some people simply disappear. When you go through a gate, your sex changes -- men become women and women become men. And no one can go back through the gate a second time. Everyone who tries disappears. When Don accidentally falls through a gate and becomes Donna, he and his friends face a life-changing adventure, for THE SEX GATES are more than they seem to be.

     It’s Commander Joe Pikeman’s job to protect what’s left: not just the computer servers, but the flesh-and-blood people huddled in fortified settlements, praying to be overlooked by pirates and other predators. When raiders start abducting children from those settlements, Joe uncovers a galaxy-wide conspiracy bent on enslaving everyone. They hit Joe where it hurts the most – where he keeps his heart buried. Now, he’s going to use all his training and skill to make them pay.

    From The Wizard of Oz to The Dark Tower, from Philip Pullman's The Golden Compass to C. S. Lewis's The Chronicles of Narnia, there is a rich tradition of this kind of fiction, but never before have the best parallel world stories and portal fantasies been collected in a single volume—until now.

    Donaldson makes a triumphant return to his New York Times bestselling and critically acclaimed Chronicles of Thomas Covenant series with a quartet of new novels that take place ten years after Covenant's ultimate sacrifice as savior of the Land.

    Volume One, presenting the first five writers to receive the award, features the fiction of: Robert A. HeinleinJack WilliamsonClifford D. SimakL. Sprague de CampFritz Leiber

    Varia was from Yuulith, a magical world separated from Earth by only a dimensional barrier that could sometimes be broached.

    While they slept, the starship went through the wrong fold in space and settled for a different world, a wild world. Three centuries after the founding of a colony on the uncharted planet, Gilead awakens to find humanity slipped back to medieval tech and a feudal structure. Worse, the king who wants Gilead awake won’t let Gilead awaken his wife.

    But the Robotech Masters were already on their way to Earth. And at Tirol, the SDF-3 would face the galaxy's fiercest warlord: the Invid Regent!#2 Dark PowersStranded on the far side of the galaxy after battling the Invid hordes, the Robotech Expeditionary Force's chances for survival were slim. But suddenly a starship unlike any other appeared -- manned by an incredible assortment of beings determined to challenge the Invid Regent himself! REF volunteers and their war mecha signed on for a campaign that would mean their destruction -- or liberty for the planets of the Sentinels!#3 Death DanceFour months had passed without a word from the Sentinels. Fearing the worst, the Expeditionary Mission to Tirol began truce negotiations with the Invid Regent himself. But far away, the surviving Sentinels were stranded on Praxis, a planet in cataclysm. Deep within that world's core were answers to the Sentinels' prayers -- if they could only reach them before Praxis tore itself apart...

    Set in a countryside swarming with sabertooths and dinosaurs, Jamestown is home to a small band of American and allied scientist-adventurers.But there are flies in this ointment - and not only the Venusian dragonflies, with their yard-wide wings. The biologists studying Venus's life are puzzled by the way it not only resembles that on Earth, but is virtually identical to it. The EastBloc has its own base at Cosmograd, in the highlands to the south, and relations are frosty. And attractive young geologist Cynthia Whitlock seems impervious to Marc's Cajun charm.Meanwhile, at the western end of the continent, Teesa of the Cloud Mountain People leads her tribe in a conflict with the Neanderthal-like beastmen who have seized her folk's sacred caves. Then an EastBloc shuttle crashes nearby, and the beastmen acquire new knowledge… and AK47's.Jamestown sends its long-range blimp to rescue the downed EastBloc cosmonauts, little suspecting that the answer to the jungle planet's mysteries may lie there, among tribal conflicts and traces of a power that made Earth's vaunted science seem as primitive as the tribesfolk's blowguns. As if that weren't enough, there's an enemy agent on board the airship…

    With cover art by Bob Eggleton.Contents: Through darkest adolescence with Lois McMaster Bujold : or Thank you, but I already have a life / Lillian Stewart Carl — The adventure of the lady on the embankment — Barter — Garage sale — The hole truth — Dreamweaver’s dilemma — The mountains of mourning — My first novel — Beyond genre barriers — The unsung collaborator — Allegories of change — Biolog — Answers — Miles Naismith Vorkosigan : his universe and times / Suford Lewis — Towards a genealogy of Lord Miles Vorkosigan and other persons of interest / Suford Lewis — A pronunciation guide to names and places / Suford Lewis

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    . .1681: When Sir Isaac Newton turns his restless mind to the ancient art of alchemy, he unleashes Philosopher's Mercury, a primal source of matter and a key to manipulating the four elements of Earth, Air, Fire, and Water. Now, as France and England battle for its control, Louis XIV calls for a new weapon--a mysterious device known only as Newton's Cannon.Half a world away, a young apprentice named Benjamin Franklin stumbles across a dangerous secret. Pursued by a deadly enemy--half scientist, half sorcerer--Ben makes his fugitive way to England. Only Newton himself can help him now. But who will help Sir Isaac? For he was not the first to unleash the Philosopher's Mercury. Others were there before him. Creatures as scornful of science as they are of mankind. And burning to be rid of both . . .

     Fresh from Duck Soup (1933), Julius, Leonard, Arthur and Herbert Marx - or as the world knows them, Groucho, Chico, Harpo and Zeppo - are transported by a freak electrical storm to Nacogdoches, Texas in the year 1826. Landing in the midst of the Fredonian Rebellion (the first attempt by settlers in Texas to secede from Mexico) and into the company of the only other Jewish person in town, they are in deep dreck. Falling in with Stephen F. Austin and inadvertently filling his head with knowledge of what is to come, our heroes risk tampering with the future of Texas, and perhaps the entire U.S.A., in their quest to return to their own time. Will they find their way back? Or will they be doomed to live out their lives without indoor plumbing?

    The decrepit trading ship he served on was also going nowhere: the Rustam's Slipper was grounded on Schuyler's World, a backwater planet lacking even a good bar. For diversion, Schuyler's offered bad bars, cute yet conniving aliens called Rodents, and Catarina -- a mysterious, beautiful, unsettlingly smart woman. Catarina wanted a berth on the Slipper; the Slipper needed a crew member. She Was hired.But Ken soon discovered that Catarina was more than a vamp with a razor-sharp wit. First was her case of McLendon's Syndrome, an obscure little contagious disease treatable only with chocolate-chip cookies. Then there were all the secrets she was hiding. So she wasn't the most trustworthy ally a guy could want as the Slipper hurried straight into murder, mayhem, intrigue, and an interspecies war -- but she was all Ken had. And unless she helped Ken whip the crew into shape and muster the misfits and malcontents of Schuyler's World, it would be the shortest war on record...Del Rey Discovery

    To be Deryni in a land ruled by the all-powerful Church is to be branded an outcast. But now, young Prince Kelson is about to assume the throne after the mysterious death of his father. He must be told of his magical heritage. For his legacy is being challenged by a woman who does not hesitate to lay full claim to her Deryni powers. And to face her in magical combat, Kelson must learn a lifetime’s worth of magic in a few short days.If he loses, he dies as his father did. And if he wins, he is King—but all the world will know that he is also Deryni…