Full AspenCat Catalog

Presents one hundred facts about science, covering lasers, magnets, computers, and other topics, and includes illustrations, puzzles, quizzes, and projects.

An imaginative look at space with such questions as "What if the sun went out?" and "What if there were Martians?"

Explores the world of mammals by answering such questions as "What if giraffes had short necks?" "What if a bat couldn't hear?" and "What if whales could breathe underwater?"

An imaginative look at airplanes through such questions as "What if airplanes didn't have air?" and "What if airplanes could go into space?"