"It's fun to think about questions like 'Would you rather search for life on Mars or on Mercury?' World Book has gathered dozens of such questions about the Earth, our solar system and space. To help you get thinking, our editors have even offered a little expert advice. It's not important that you come up with the same answer as anyone else. What matters is that you think big every day!"--Page [4] of cover.
juvenile
[writer, Jeff De La Rosa].
