Perfect planet [AstroNuts Volume: #3]by Scieszka, Jon 

BTSB Prebound(Chronicle Books, 2021)

BTSB #: 792326 Available

Dewey: FAges: 8-12   
AR: 4.2 MG Lexile: 570 F&P: R

Genres: Humorous Fiction Science Fiction Adventure Fiction

Subjects: Astronauts - Fiction Genetic engineering - Fiction Time travel - Fiction Environmental protection - Fiction Science fiction Humorous fiction Earth (Planet) - Fiction

Summary: So far the AstroNuts have failed to find a suitable planet, but NNASA (Not-NASA) has come up with a new plan: send the four animal astronauts back through time on Earth where they are to contact early homo sapiens and somehow set them on a path to a sustainable future--trouble is, humans seem inferior to many of the other species (especially the wolves), so the AstroNuts come up with a Survival of the Fittest Olympics, hoping that with a little help the humans will prevail.