A collection of twenty-one of the author's finest stories representing more than forty years of writing features some of his classic themes, including the future of technology and the transformation of humankind, in an anthology including the Hugo- and Nebula-nominated title story. Reprint.

Collects forty-three articles in which the prolific science writer examines, speculates on, and evaluates various aspects, achievements, and impacts of science and technology in the past and in the future