air

Discusses the causes and harmful effects of acid rain and examines possible solutions for this pollution problem.

Simple text and illustrations describe the ecological issue of air pollution and ways children can help to control the problem.

Describes the composition and characteristics of air, its indispensability to plants and animals, and the necessity of keeping air fit to breathe.

Presents experiments that reveal the properties of air, with special attention to those that would make good science fair projects.

Discusses the environmental damage and safety problems associated with the internal combustion engine, with an emphasis on emissions and air pollution, and examines various solutions and alternatives to the situation.

Explains the qualities of air that we breathe and of the air in the layers of the atmosphere, and briefly discusses gravity and air pressure.

Explores the importance of air to life on Earth and examines how various species have taken advantage of the air to survive and thrive. Also reveals the impact of air on human society and culture and how we have learned to understand and take advantage of it.

Explains the properties of air through experiments which feature such topics as what air is, how much force wind has, what shape is best for flying, and how sound travels.

Presents simple experiments demonstrating the basic scientific principles of air.

Answers such questions as "What is air made of?" and "How do plants use carbon dioxide?". Includes simple experiments.