TIME IS RUNNING OUT Decades from now, an artificial black hole has fallen into the Earth's core. As scientists frantically work to prevent the ultimate disaster, they discover that the entire planet could be destroyed within a year. But while they look for an answer, some claim that the only way to save Earth is to let its human inhabitants become extinct: to reset the evolutionary clock and start over. Earth is the Hugo and Locus Award-nominated novel that, with countless accurate predictions, earned David Brin his reputation as a visionary futurologist.

Their space-yacht, pursued by angry Adderkops thirsting for their blood, has run into serious engine trouble. Picking up the trail of another alien spaceship, they decide to board it and force its crew to take them home. But once aboard, its not so easy to find the crew: they're faced with cages full of bizarre, other-wordly animals: Tiger apes, Elephantoids, Gorilloids, Caterpiggles, Helmet beasts, Tentacle centaurs. One set of these extraordinary creatures must be the crew, in hiding. But which? Survival depends on finding the right answer...