Hominids (Tor, 2003)
When a Neanderthal physicist, Ponter Boddit, accidentally finds himself in another universe, in an underground research facility in Canada, it turns out that Neanderthals would develop a completely different civilization.
Humans (Tor, 2003)
Ponder Boddit, a Neanderthal physicist, takes a Canadian geneticist back to his universe to see what sort of civilization the Neanderthals would develop.
Hybrids (Tor, 2003)
How would humans co-exist with other species if such distinctions as race and sex divide them?
Far-Seer (Ace, 1992)
For intelligent dinosaur Afsan, modeled on Galileo, discovering the true arrangement of the heavens is not merely of scientific interest; it is life or death for his entire world.
Fossil Hunter (Ace, 1993)
Toroca, a dinosaur geologist, is seeking unusual metals that can take dinosaurs to the stars. But suppose he discovers instead the true origin of the dinosaurs?
Foreigner (Ace, 1994)
If the mind of a great (alien) scientist were analyzed, what would it show?
The aliens have sent us a message, and we have responded.
Mindscan (Tor, 2005)
Jake Sullivan has cheated death by copying his consciousness into an android. However … that isn’t the perfect solution.
Calculating God (Tor, 2000)
An alien lands on Earth, in Toronto, bearing the news that God really exists. But maybe Earth soon won’t.
Flashforward (Tor, 1999)
Due to a bungled physics experiment, the entire human race gets a look at two minutes twenty-one years from now. But what if you see nothing?
Factoring Humanity (Tor, 1998)
Asignal from the Alpha Centauri star system is detected in 2007. … it shows amazing new technology that practically eliminates space and time. Could this be a new stage of human evolution?
Illegal Alien (Ace, 1997)
The first time humans contact aliens is when a disabled Tosok starship lands. At first, all is conventional well-wishing. But the a popular scientist is found dead, and one of the Tosoks is the most likely suspect.
Frameshift (Tor, 1997)
A dying scientist accepts the opportunity to raise a child who might be part Neanderthal.
Starplex (Ace, 1996)
Mysterious, artificial wormhole have solved the problem of space travel. These interstellar passages seem too close, too conveniently, for Starplex Director Keith Lansing.
The Terminal Experiment (HarperPrism, 1995)
Dr. Peter Hobson, testing his theories of immortality and life after death, has copied his personality into three electronic simulations. Things don’t go as planned, of course.
End of an Era (Ace, 1994)
To learn how the dinosaurs died, we first must watch them live . . .
Golden Fleece (1990)
Is a mere starship engineer really any match for a murderous computer?
Short Story Collections
Relativity (ISFiC Press, 2004)
Iterations (Quarry Press, 2002)