Where do jokes come from? Using a mighty computer called "Multivavac", Noel Meyerhof, a Grand Master, asks two questions of Multivac after feeding it all the jokes he knows to find where they came from. Would you believe extraterresterials?

When the technology for twisting to other probability patterns was developed, a grateful Earth solved its overcrowding by sending people to live on Earths where plants and animals never got started. Each family could have its own planet, because there was an infinite number of such alt-Earths available, and the computers never assigned the same one twice. Trouble was - someone else had the same idea!

This first volume of Favorite Science Fiction Stories features "the best of the best" from the Golden Age of science fiction. It includes 21 stories by, among others, Andre Norton, Marion Zimmer Bradley, Robert Silverberg, Stanley G. Weinbaum, Philip K. Dick, Edmond Hamilton, Jack Williamson, Alan Edward Nourse, Fritz Leiber, Frederik Pohl, Fredric Brown, Kurt Vonnegut Jr., and others.

A research spaceship from Earth lands on Saybrook's Planet to investigate a report by an earlier colony ship. The colony ship's captain, Saybrook, had reported that the planet's abundant plant and animal life was all part of a single organism with a unified consciousness. That organism was able to induce pregnancy in all the colony ship's female animals, and all the offspring born had green patches of fur instead of eyes, a sign that they were part of the planetary organism.

This clever and thought-provoking short story by Isaac Asimov, one of the masters of science fiction, suggests that a higher power can step in and steer us from our reckless ways. After all, we may be inhabitants of a universal barnyard overseen by a master farmer.

Four co-workers raise some very interesting questions over lunch regarding Creationism and Evolution. This short Asimmov short story may leave you wondering.

Isaac Asimov has never laid claim to the title of “Mr. Science Fiction,” but he personifies science fiction in many ways. For one thing, he has grown up with the field, improving as he went; for another, he is actually a teacher of science by profession. But most significant, perhaps, is the scope of his vision, ranging (like that of science fiction itself) from the infinitely vast - as in many of his novels - to the poignantly small - as in this story… Narrated by John W. Michaels.

Are you puzzled by pulsars? Baffled by black holes? Bewildered by the big bang? If so, here are succinct, crystal-clear answers to more than 100 of the most significant questions about the essential nature of the universe - questions that have fired the imagination since the beginning of history. Over the course of this fantastic voyage, the origins, the discoveries, and the stunning achievements of astronomy will unfold before your eyes

Clarence Rimbro owns the entire planet Earth. This is no great accomplishment as, thousands of years in our future, anyone can do it. There are an infinite number of possible Earths, each existing in its own parallel universe. If the chance of life arising on any one of them is about 50 percent, then half the time a random choice of a parallel universe will lead to a dead Earth.

In 1952, Mount Everest was thought to be unscalable. In this short story by Isaac Asimov, there is something on the mountain, and Jimmy Robbons parachutes from an aircraft to find out what it is.

This collection features three classic, dramatized Isaac Asimov stories: "Pebble in the Sky", "Nightfall", and "Hostess".

What would a child of the future envision a classroom of the 20th century to look like? This is a question that is explored in a rare piece of science fiction from master writer Isaac Asimov. Listen in to two children of the 22nd century as they explore their first-ever book. Everything they know comes on a screen and they're not sure what to do with a book. While written decades ago it's uncanny to hear the similarities to our present.

Only a few know the terrifying truth - an outcast Earth scientist, a rebellious alien inhabitant of a dying planet, a lunar-born human intuitionist who senses the imminent annihilation of the Sun... They know the truth - but who will listen? They have foreseen the cost of abundant energy - but who will believe?These few beings, human and alien, hold the key to the Earth's survival.

A collection of 20 classic short stories by Isaac Asimov, author of the Foundation series, featuring the definitive and only in-print version of “Nightfall”.

The Eternals, the ruling class of the Future, had the power of life and death not only over every human being but over the very centuries into which they were born. Past, Present, and Future could be created or destroyed at will. You had to be special to become an Eternal. Andrew Harlan was special. Until he committed the one unforgivable sin - falling in love. Eternals weren’t supposed to have feelings. But Andrew could not deny the sensations that were struggling within him. He knew he could not keep this secret forever. And so he began to plan his escape.