is a Canadian novelist, short story writer, academic, essayist, travel writer, and editor. He is primarily interested in science fiction, speculative science fiction, dystopian and post-apocalyptic fiction, although he has also written travelogues, poetry, book-length academic treatments, and more literary novels. His other interests range from astrophysics to materials science, from child-rearing to construction, from cognitive therapy to paleoanthropology.