検索キーワード： "Clifford Simak" 宇宙探査

After a disastrous planet-wide war, Earth is nothing more than an elite graveyard—but Fletcher Carson is venturing back in search of a vital bounty. Fletcher, a former artist, is joined by a sentient machine, an ancient, powerful robot, and a treasure-seeking beauty. They soon discover that Earth harbors more than the carefully groomed tombstones. In the wild land beyond the cemetery there are dangerous machines, mutant creatures, and even humans who never left their home planet.

In the title story, a man's newfound ability to walk in the past allows him to dwell among dinosaurs, saber-toothed tigers . . . and something even more timeless. In "Construction Shack," the first manned expedition to Pluto reveals that no matter how advanced aliens may be, even they don't always get everything right. And in "Univac 2200," the thin line between humans creating technology and humans becoming technology is about to be crossed-and there may be no going back.