The Stone Canal

British author MacLeod's second novel to be published in the U.S. (after The Cassini Division) opens on New Mars, a distant planet discovered on the other side of a wormhole, where humans resettled after Earth was decimated by World War III. While New Mars is populated by Earthlings, the planet's real labor is done by the ""fast folk,"" nanotech-based artificial intelligence machines that evolve much more quickly than humans. This stratified world was built unwittingly by Jon Wilde and Dave Reid, who met as socialist-minded university students in Glasgow and became two corners of a romantic triangle that later influenced history in myriad ways. MacLeod weaves the story of the two men's complex relationship along two tracks, past and present. In the past, Wilde and Reid both fell for the same woman; Wilde eventually married her and raised a family. In the meantime, Reid built a powerful high-tech company that could grow no further without some changes in the political climate--changes that Wilde is hired to help create. The fallout from this alliance and from Reid's own hidden agenda ultimately lead to the world war and to a reliance on machine intelligence, as well as to the creation of a world where death is impossible as long as you have a waiting clone and a recent brain backup. Thanks to that resurrection technology, Wilde and Reid face each other as enemies again on New Mars. MacLeod's writing is smooth and sure, full of striking images and breathtaking extrapolations of current technology. It's a pleasure and a challenge to read a book where human potential and human foibles are dealt with as thoroughly as is scientific advancement. Fans of William Gibson and of Iain Banks, in particular, will enjoy this visionary novel. (Jan.)