They mustn't harm a human being, they must obey human orders, and they must protect their own existence...but only so long as that doesn't violate rules one and two. With these Three Laws of Robotics, humanity embarked on a bold new era of evolution that would open up enormous possibilities, and unforeseen risks.

Welcome to Ringworld, an intermediate step between Dyson Spheres and planets. The gravitational force created by a rotation on its axis of 770 miles per second means no need for a roof. Walls 1,000 miles high at each rim will let in the sun and prevent much air from escaping. Larry Niven's novel, Ringworld, is the winner of the 1970 Hugo Award for Best Novel, the 1970 Nebula Award for Best Novel, and the 1972 Ditmars, an Australian award for Best International Science Fiction.

The war raged across the galaxy. Billions had died, billions more were doomed. Moons, planets, the very stars themselves, faced destruction, cold-blooded, brutal, and worse, random. The Idirans fought for their Faith; the Culture for its moral right to exist. Principles were at stake. There could be no surrender. Within the cosmic conflict, an individual crusade. Deep within a fabled labyrinth on a barren world, a Planet of the Dead proscribed to mortals, lay a fugitive Mind. Both the Culture and the Idirans sought it....

In the year AD 3000, Earth is a dystopian wasteland, plundered of its natural resources by alien conquerors known as Psychlos. Fewer than 35,000 humans survive in a handful of communities scattered across the face of a post-apocalyptic Earth. From the ashes of humanity rises a young hero, Jonnie Goodboy Tyler. Setting off on an initial quest to discover a hidden evil, Jonnie unlocks the mystery of humanity’s demise and unearths a crucial weakness in their oppressors.

In the aftermath of WWII, an alien virus struck the Earth, endowing a handful of survivors with extraordinary powers. Originally published in 1987, the newly expanded saga contains additional original stories by eminent writers.

Harry Keogh is the man who can talk to the dead, the man for whom every grave willingly gives up its secrets, the one man who knows how to travel effortlessly through time and space to destroy the vampires that threaten all of humanity.

Surrounded by secrecy, it is home to the wildest dreams and darkest nightmares. Incredible amounts of money have been lavished on it. The best minds of two generations have labored to build it. And somehow, bit by bit, it is claiming the Earth's most valuable resource - its children.

This book contains 26 of the greatest science fiction stories ever written. They represent the considered verdict of the Science Fiction Writers of America, those who have shaped the genre and who know, more intimately than anyone else, what the criteria for excellence in the field should be. The authors chosen for the Science Fiction Hall Fame are the men and women who have shaped the body and heart of modern science fiction; their brilliantly imaginative creations continue to inspire and astound new generations of writers and fans.

For decades, The Year's Best Science Fiction has been the most widely read short science fiction anthology of its kind. Now, after 35 annual collections comes the ultimate in science fiction anthologies. In The Very Best of the Best, legendary editor Gardner Dozois selects the finest short stories for this landmark collection, including short fiction from authors such as Charles Stross, Michael Swanwick, Nancy Kress, Greg Egan, Stephen Baxter, Pat Cadigan, and any many more.

It isn’t easy to get a group of bestselling SF authors to write new stories for an anthology, but that’s what Elizabeth Anne Hull has done in this powerhouse book. With original, captivating tales by Greg Bear, Gregory Benford, Ben Bova, David Brin, Cory Doctorow, Neil Gaiman, Joe Haldeman, Harry Harrison, Larry Niven, Vernor Vinge, Gene Wolfe, and others, Gateways is a SF event that will be a must-buy for SF readers of all tastes, from the traditional to the cutting edge; from the darkly serious to the laugh-out-loud funny.

Sixteen all-new stories by science fiction's top talents, collected by best-selling author George R. R. Martin and multiple-award-winning editor Gardner Dozois.

On September 28th, a geologist working in Death Valley finds a mysterious new cinder cone in very well-mapped area. On October 1, the government of Australia announces the discovery of an enormous granite mountain. Like the cinder cone, it wasn't there six months ago.

Something is happening to planet Earth, and the truth is too terrifying to contemplate

For millions of years, the part of the galaxy containing our solar system has been moving through a vast force field that has been inhibiting certain electromagnetic and electrochemical processes and, thus, certain neurotic functions. When Earth escapes the inhibiting field, synapse speed immediately increases, causing a rise in intelligence, which results in a transfigured humanity reaching for the stars, leaving behind our earth to the less intelligent humans and animal life-forms.

Floyd Jones has always been able to see exactly one year into his future, a gift and curse that began one year before he was even born. As a fortuneteller at a post-apocalyptic carnival, Jones is a powerful force, and may be able to free society from its paralyzing Relativism. If, that is, he can avoid the radioactively unstable government hit man on his tail.

They first appear as a series of dots on astronomical plates, heading from Saturn directly toward Earth. Since the ringed planet carries no life, scientists deduce the mysterious ship to be a visitor from another star. The world's frantic efforts to signal the aliens go unanswered. The first contact is hostile: the invaders blast a Soviet space station, seize the survivors, and then destroy every dam and installation on Earth with a hail of asteriods.

It isn’t easy to get a group of bestselling SF authors to write new stories for an anthology, but that’s what Elizabeth Anne Hull has done in this powerhouse book. With original, captivating tales by Greg Bear, Gregory Benford, Ben Bova, David Brin, Cory Doctorow, Neil Gaiman, Joe Haldeman, Harry Harrison, Larry Niven, Vernor Vinge, Gene Wolfe, and others, Gateways is a SF event that will be a must-buy for SF readers of all tastes, from the traditional to the cutting edge; from the darkly serious to the laugh-out-loud funny.

On September 28th, a geologist working in Death Valley finds a mysterious new cinder cone in very well-mapped area. On October 1, the government of Australia announces the discovery of an enormous granite mountain. Like the cinder cone, it wasn't there six months ago.

Something is happening to planet Earth, and the truth is too terrifying to contemplate

They first appear as a series of dots on astronomical plates, heading from Saturn directly toward Earth. Since the ringed planet carries no life, scientists deduce the mysterious ship to be a visitor from another star. The world's frantic efforts to signal the aliens go unanswered. The first contact is hostile: the invaders blast a Soviet space station, seize the survivors, and then destroy every dam and installation on Earth with a hail of asteriods.

The music of Rush, one of the most successful bands in music history, is filled with fantastic stories, evocative images, thought-provoking futures and pasts. In this anthology, notable, best-selling, and award-winning writers each chose a Rush song as the spark for a new story, drawing inspiration from the visionary trio Geddy Lee, Alex Lifeson, and Neil Peart.

After more than two hundred years as a corpsicle, Jaybee Corbell awoke in someone else’s body and under threat of instant annihilation if he made a wrong move while they were training him for a one-way mission to the stars. But Corbell bided his time and made his own move. Once he was outbound, where the society that ruled Earth could not reach him, he headed his starship toward the galactic core.

Moth was a beautiful planet, the only one with wings - two great golden clouds suspended in space around it. Here was a wide-open world for any venture a man might scheme. The planet attracted unwary travelers, hardened space-sailors, and merchant buccaneers - a teeming, constantly shifting horde that provided a comfortable income for certain quick-witted fellows like Flinx and his pet flying snake Pip.

This two-story compiliation, read by Stefan Rudnicki, offers two stories from David Drake's popular Hammer's Slammers series. In At Any Price, Col. Alois Hammer's indomitable Slammers are called in to support human colonists against a native uprising in this novel-length adventure. But even though the natives' off-world weapons are no match for the Slammers, their ability to teleport gives them a frightening advantage! In Rolling Hot, the battle-crazed troop of recruits and vets, led by Captain Ranson, must cover 300 miles of hostile enemy territory.

Paleontologist Brandon Thackery and his rival, Miles "Klicks" Jordan, fulfill a dinosaur lover's dream with history's first time-travel jaunt to the late Mesozoic. Hoping to solve the extinction mystery, they find Earth's gravity is only half its 21st-century value and dinosaurs that behave very strangely. Could the slimy blue creatures from Mars have something to do with both?

They are the Voltarians of Voltar - an empire 110 planets strong. They are already among us. And the invasion is about to begin...in a hundred years or so. Or is it? The truth is far more sinister. Undercover, underground, and out of sight, the invaders plan what may in fact be a massive diversion. In the darkest recesses of Voltar’s Coordinated Information Apparatus (otherwise known as the CIA), a tyrant of terror sets out to exploit the invasion in order to seize power. All that stands in his way is a planet that doesn’t exist.

Earth is being invaded by the shetani - spirit creatures so small and stealthy that only one man knows about the increasing peril. The potential savior is an African elder named Olkeloki who is capable of fighting evil both in this world and the spirit one. But to be successful he must recruit the help of two others: government agent Joshua Oak, and a feisty young woman named Merry Sharrow. Only the three of them can keep the shetani from destroying reality as we know it.

The year is 3326. Nigel Sheldon, one of the founders of the Commonwealth, receives a visit from the Raiel - self-appointed guardians of the Void, the enigmatic construct at the core of the galaxy that threatens the existence of all that lives. The Raiel convince Nigel to participate in a desperate scheme to infiltrate the Void. Once inside, Nigel discovers that humans are not the only life-forms to have been sucked into the Void. The humans trapped there are afflicted by an alien species of biological mimics.

Beyond the Aquila Rift: It's shorthand for the trip no one ever hopes to make by accident. The one that will screw up the rest of your life, the one that creates the ghosts you see haunting the shadows of company bars across the whole Bubble. Men and women ripped out of time, cut adrift from families and lovers by an accident of an alien technology we use but rarely comprehend.

In 1943, when the United States learns that Germany is on the verge of a deadly innovation that could tip the balance of the war, the government turns to an unlikely source for help: the nation’s top science fiction writers. Installed at a covert military lab within the Philadelphia Naval Yard are the most brilliant of these young visionaries. The unruly band is led by Robert Heinlein, the dashing and complicated master of the genre. His “Kamikaze Group,” is tasked with transforming the wonders of science fiction into science fact....

Mad scientists have never had it so tough. In super-hero comics, graphic novels, films, TV series, video games, and even works of what may be fiction, they are besieged by those who stand against them, devoid of sympathy for their irrational, megalomaniacal impulses to rule, destroy, or otherwise dominate the world as we know it. It’s just not fair. So those of us who are so twisted and sick that we love mad scientists have created this guide.

Under the benevolent leadership of the League of Peoples, there is no war, little crime, and life is sacred...unless you're an Explorer. 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.