Bloom

In the distant future, nanotechnology has gotten out of control. The inner solar system has been overrun by Mycora, atom-size machines that devour everything they touch. Humanity has long since fled Earth for the cold reaches of the outer system, where the lack of heat and sunlight make it difficult--but not impossible--for the Mycora to bloom. Life in the Immunity is hard, and the survivors of humanity face the constant onslaught of the ever-evolving Mycora. But if they are to survive, the remaining humans must try to learn what happened to Earth, and whether the Mycora are finding ways to overcome their susceptibility to cold. When the Immunity mounts an expedition to plant probes on Earth's polar caps, shoemaker and aspiring journalist John Stasheim is asked to come along to chronicle the journey. He soon learns that the trip will be fraught with as many political dangers as nanotech ones, and that the Mycora are both more and less than they seem. An excellent SF novel along the lines of Greg Bear's Blood Music, but with more action and plot. Wil McCarthy is a writer to watch. --Craig E. Engler