Hanville Svetz was born into a future to match the sorriest predictions of Greenpeace. Most life forms are extinct. It is Svetz's job is to go back in time and retrieve them, or at least it was until his Institute for Temporal Research was transferred. Now, with a new boss obsessed with stars and planets, Svetz must figure out why the Martian canals have gone dry, and what it means for Earth's future. And yes Mars was inhabited! When Svetz learns how their sapient species were wiped out, he realizes that Earth could soon fall victim to a similar fate. Together with his dog Wrona, a visitor from the distant past, and Miya, an astronaut with her own complex history, Svetz must struggle to unravel a puzzle that will tax not just his rational mind, but the very limits of his imagination.
LARRY NIVEN is the multiple Hugo and Nebula Award-winning author of the Ringworld series, along with many other science fiction masterpieces. He lives in Chatsworth, California. JERRY POURNELLE is an essayist, journalist, and science fiction author. He has advanced degrees in psychology, statistics, engineering, and political science. Together Niven and Pournelle are the authors of many New York Times bestsellers including Inferno, The Mote in God's Eye, Footfall, and Lucifer's Hammer.









