Rainbow Mars

A "brilliantly conceived, funny" story cycle by the New York Times–bestselling author about a time-traveler's quest to repopulate a far-future Earth ( Kirkus Reviews).
Hanville Svetz was born into a future earth that matches the sorriest predictions of Greenpeace. With most of Earth's original species extinct, Svetz travels back and forth in time retrieving them. And when he learns that Mars was inhabited, and how the sapient Martian species were wiped out, he foresees that Earth could soon fall victim to the same fate . . .
In Rainbow Mars, multiple Hugo Award winner Larry Niven "combines an original novella and five related short stories revolving around the concept of time travel—with a fantastic twist. Known for his hard science and imaginative storytelling, Niven now illustrates his skill at offbeat seriocomic sf" ( Library Journal).
"Niven's masterly use of SF strategy hits every note, springing surprises and plot turns with dizzying pace." — Los Angeles Times