Roy A Gallant

Describes the composition of minerals, their physical properties, and how they are formed.

Explains why water, although common, has characteristics which make it an unusual substance.

An in-depth look at Earth's waters and mankind's uses of water throughout history which includes ideas about planning better use of this critical resource in the future.

Discusses plate tectonics, the theory that the surface of the earth is always moving, and the connection of this phenomenon to earthquakes and volcanoes.

Discusses the formation and movement of glaciers, how they reflect the history of the earth, and how they affect life around them.

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.

Introduces atoms, the tiny particles which make up everything in the world, discussing their different parts, how they were discovered, and how they can be used as a source of energy.

Explores the many elements that depends on rivers, both nature and people.