Roy A Gallant

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

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.

Describes what fossils are, how they are formed, and what they tell scientists about the earth's past.

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

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.

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.

Explains what a space station is, how it is put into orbit, and what experiments and living conditions are like there.

Describes what was believed in the past about stars, including the sun, and what we know today.