Description

Five-time Hugo Award-winner Larry Niven weaves together time travel and dream to produce an absolutely distinctive book about the source of the Martian "canals."Hanville Svetz was created right into a potential planet that fits the predictions of Greenpeace. Svetz moves back and forth over time locating them, with the majority of World's unique variety vanished. Svetz discovers that Mars was inhabited, and the way the sapient Martian species were destroyed. He forsees that Planet might quickly fall prey to exactly the same fate.