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I've made my first novel, Ventus, available as a free download, as well as excerpts from two of the Virga books.  I am looking forward to putting up a number of short stories in the near future.

Complete novel:  Ventus


To celebrate the August, 2007 publication of Queen of Candesce, I decided to re-release my first novel as an eBook. You can download it from this page. Ventus was first published by Tor Books in 2000, and and you can still buy it; to everyone who would just like to sample my work, I hope you enjoy this version.

I've released this book under a Creative Commons license, which means you can read it and distribute it freely, but not make derivative works or sell it.

Book Excerpts:  Sun of Suns and Pirate Sun

I've made large tracts of these two Virga books available.  If you want to find out what the Virga universe is all about, you can check it out here:

Major Foresight Project:  Crisis in Zefra

In spring 2005, the Directorate of Land Strategic Concepts of National Defense Canada (that is to say, the army) hired me to write a dramatized future military scenario.  The book-length work, Crisis in Zefra, was set in a mythical African city-state, about 20 years in the future, and concerned a group of Canadian peacekeepers who are trying to ready the city for its first democratic vote while fighting an insurgency.  The project ran to 27,000 words and was published by the army as a bound paperback book.

If you'd like to read Crisis in Zefra, you can download it in PDF form.

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Reprap is alive!

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The world's first self-reproducing fab machine has built its first copy--which promptly began to build a copy of itself

This one's from the unbelievably cool department:  reprap has built its first child machine! 

Reprap is the world's first self-reproducing machine.  Mind-boggling as this sounds, the proof is in the picture; and, if you take some time to explore the site, in the project's extensive documentation.

Not that reprap is yet able to sit in a corner by itself and knock off copies of itself without human aid--it still needs people to screw the bits together and as yet not all of its electronics can be made by itself.  Think of the human beings and electronics as being like environmentally-available resources, free-floating enzymes, say, that facilitate the work of the reprap.  It needs them, like we need air; but that doesn't mean it's not reproducing by itself. 

The idea is that the irreproducible parts should be commodities you can find in any electronics supply store; what reprap makes is its unique pieces. 

Reprap is now alive, by some definitions.  It's is a stunning milestone and happened a lot faster than I expected it would.  Thanks to Michael Nielsen for alerting me to this!

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The Virga Series

(Sun of Suns and Queen of Candesce are combined in Cities of the Air)

Available in Trade paperback May 5, 2012:


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    Lady of Mazes

    “The most thought-provoking and interesting work of hard SF that I've read in the past year."
    —Charles Stross

    "With paradigm shifts one inside another like a set of Russian dolls, this splendid novel propagates into a demolition derby of Big Ideas. Required post-human reading.”
    —Scott Westerfeld, author of The Risen Empire

    “An astonishing saga. One helluva read!”
    —Charles Harness

    “Karl Schroeder has always had a knack for intelligent and provocative thought experiments disguised as space opera. Now he ups the ante with a fascinating riff on consensual [and conflicting] realities. Lady of Mazes contains more cool ideas than Ventus and Permanence combined.”
    —Peter Watts