In one of Niven's rare stories of cross-dimensional travel, an unnamed protagonist discovers the real reason that things seem so foggy on a foggy night.

Detective-Lieutenant Gene Trimble faces an increasing number of bizarre suicides in a world struggling to come to terms with its place in a multiverse of different timelines, where every decision ever made by anyone becomes an alternate universe.

The tragic story of the first manned expedition to Pluto, and the fate of the surviving astronaut who finds a unique way to prolong his lifespan in hopes of rescue.

This early Niven story was the first of many to delve deeply into the legal and ethical implications of organ-transplant technology. It introduces Known Space's organ banks and the breed of criminals known as "organleggers".

How would you spend your last night on Earth? When the moon suddenly starts shining brighter, Stan and Leslie realize the sun must have gone nova, and they only have a few hours until the earth rotates into the deadly sunshine.

Compiled by intrepid journalist Neve Pride, this archive of recordings spans the months after dragons emerged on earth, chronicling the communities that sprang up amid the destruction, the scientists, military leaders, and experts searching for a defense, and those steadfastly seeking the missing. Neve and her young daughter Bex travel among the wreckage speaking to those left behind and surviving, against all odds. Neve records everything for history, and in the hopes of locating a clue as to where the dragons came from and how one might stop them.

Ryland Grace is the sole survivor on a desperate, last-chance mission - and if he fails, humanity and the Earth itself will perish. Except that right now, he doesn't know that. He can't even remember his own name, let alone the nature of his assignment or how to complete it. All he knows is that he's been asleep for a very, very long time. And he's just been awakened to find himself millions of miles from home, with nothing but two corpses for company.

Annie has always had high hopes for her future. But the reality of her life just isn’t measuring up. She loves her fiancé, Greg–doesn’t she? She’s going to get her degree and open her own business–won’t she? Then, a strange old woman shows up outside her house, and she seems to know a lot about Annie. An awful lot. Annie could tell the old woman to get lost. Yet there’s something about her Annie just can’t shake. And what she learns could change her life forever–but is it the life she envisioned?

For some it’s an opportunity. For others it’s a moment to question their faith: In God, in science, in everything. Still others try to keep the world running in the face of absurdity and uncertainty. And then there are the billions looking to the sky and wondering how a thing that was always just there is now... something absolutely impossible.

Six days ago, astronaut Mark Watney became one of the first people to walk on Mars. Now, he's sure he'll be the first person to die there. After a dust storm nearly kills him and forces his crew to evacuate while thinking him dead, Mark finds himself stranded and completely alone with no way to even signal Earth that he’s alive - and even if he could get word out, his supplies would be gone long before a rescue could arrive. But Mark isn't ready to give up yet.

Nominated for both the Hugo Award and the Nebula Award, this short story introduces the Warlock, who discovers to his horror that the world's mana, the fuel that makes magic work, is rapidly dwindling. The news spells doom for magic-based society. Unfortunately, no secret that powerful can stay hidden for long.

In one of Niven's rare stories of cross-dimensional travel, an unnamed protagonist discovers the real reason that things seem so foggy on a foggy night.

The tragic story of the first manned expedition to Pluto, and the fate of the surviving astronaut who finds a unique way to prolong his lifespan in hopes of rescue.

A stranded Rammer who finds himself transported from the depths of space to humanity's cradle on Earth tells his harrowing tale to a people-watcher. This short story was first printed in Galaxy in September 1969.

Detective-Lieutenant Gene Trimble faces an increasing number of bizarre suicides in a world struggling to come to terms with its place in a multiverse of different timelines, where every decision ever made by anyone becomes an alternate universe.