Gallant, Roy A

Describes how the first Indians arrived from Asia and how their society developed in different parts of North America.

Presents the theories, controversies, and latest scientific thinking on how the Solar System, the Earth, and the first biological organisms came to be and how the latter changed and adapted for survival. Includes a glossary of terms.

Discusses the evidence gathered over the years by geologists that has led them to formulate certain theories about the formation of the earth and the continual changes that have been taking place ever since.

Describes stars--how they are formed, their composition, and what happens when they die.

An introduction to the celestial phenomena of asteroids, meteoroids and meteorites, and comets.

Describes the nine planets that make up the solar system.

Describes types of caves, particularly the formation and physical features of limestone caves, and provides information about the animal and plant life found in caves, as well as about human cave dwellers and their paintings.

Discusses the planets, moons, suns, asteroids, meteoroids, and comets of the solar system, their features and movements, and man's exploration of them.

Discusses the different types of sand dunes, how they form and move, the destruction they can cause, and the animal and plant life they support.

Explores such astronomy topics as how the sun, stars, and planets were born, how the universe expands, and life on other planets.