Candy Quackenbush of Chickentown, Minnesota, one day finds herself on the edge of a foreign world that is populated by strange creatures, and her life is forever changed.

Thirteen-year-old Atticus "Tick" Higginbottom begins receiving mysterious letters from around the world signed only "M.G.," and the clues contained therein lead him on a journey to the perilous 13th Reality and a confrontation with evil Mistress Jane.

Faster than light travel is impossible--until the discovery of The Flow, an extradimensional field available at certain points in space-time, which can take us to other planets around other stars. Riding The Flow, humanity spreads to innumerable other worlds. Earth is forgotten. A new empire arises, the Interdependency, based on the doctrine that no one human outpost can survive without the others. It's a hedge against interstellar war--and, for the...

"In How to Build a Time Machine, Brian Clegg provides an understanding of what time is and how it can be manipulated. He explores the remarkable possibilities of real time travel that emerge from quantum entanglement, superluminal speeds, neutron star cylinders and wormholes in space. With the fascinating paradoxes of time travel echoing in our minds will we realize that travel into the future might never be possible? Or will we realize there is no...

Kell is one of the last Travelers -- magicians with a rare, coveted ability to travel between parallel universes -- as such, he can choose where he lands. There's Grey London, dirty and boring, without any magic, ruled by a mad King George. Then there's Red London, where life and magic are revered, and the Maresh Dynasty presides over a flourishing empire. White London, ruled by whoever has murdered their way to the throne -- a place where people...

"Annie, Edward, and their young daughter, Rose, live in a cramped apartment. One night, without warning, they find a beautiful terrace hidden in their closet. It wasn't there before, and it seems to only appear when their friend Stephanie visits. A city dweller's dream come true! But every extra bit of space has a hidden cost, and the terrace sets off a seismic chain of events, forever changing the shape of their tiny home, and the shape of the world"--...

The Firstborn—the mysterious race of aliens who first became known to science fiction fans as the builders of the iconic black monolith in 2001: A Space Odyssey—have inhabited legendary science fiction master Sir Arthur C. Clarke's writing for decades. With Time's Eye and Sunstorm, the first two books in the acclaimed Time Odyssey series, Clarke and his brilliant coauthor, Stephen Baxter, imagined a near future in which the Firstborn

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Tess de Sousa leaves Miss Ackerbee's orphanage to live with her new guardian in Roedeer Lodge, taking with her a fondness for scientific experimentation, a pet tarantula named Violet, and a device that allows her to travel to parallel universes.

Presents the continuing adventures of Henry York, who has been living in Kansas with his cousins, where he discovers doorways leading to other worlds and becomes involved in a multi-world struggle between good and evil.

Three ancient scrolls beckon high school student Aidan Thomas to enter a realm of knights, kings, and unusual creatures, but he must rely on instinct and his latent athletic ability to deal with the terror, tempest, and treason offered by this new world.