Describes the work of archaeologists and discusses some significant archaeological finds in the old and new worlds and what they have revealed about man's progress and civilization through the ages.

Discusses such mystifying phenomena as the auroras, black holes, and Bigfoot.

Describes how inventors think and work, explains how one invention--plastic--has changed the world, and briefly discusses seventy-five other important inventions, from the jet engine to the potato chip.

Explains how physics is involved in all aspects of our lives--through chapters on physics in fun, nature, home, and sports--and presents activities to demonstrate physical principles.

Introduces the world of visual illusion describing the workings of the eye-brain system and how different types of illusions occur.

Describes the ways in which dogs are bred and trained for such careers as livestock guardian, herder, helper for the disabled, sled-puller, and entertainer.

Examines how different animals move, communicate, raise their young, take in nourishment, and defend themselves.

"An introduction to the sun and other stars for primary and intermediate grade students with information about their features and exploration. Includes charts and diagrams, a list of highlights for each chapter, fun facts, glossary, resource list, and index"--Provided by publisher.