air

A selection of articles provide a running debate on the issue of the greenhouse effect. Includes a study guide and student activities.

"Describes what air is and why it's important"--Provided by publisher.

Describes what air is, discusses air particles and weight, wind and motion, and air's benefits for the earth. Presents instructions for an air-weighing experiment.

Discusses municipal, industrial and individual contributions to air pollution, its harmful effects, and the progress made in cleaning up city air.

Presents simple concepts relating to air and breathing, and ends with three easy experiments on breathing for children to try.

There are numerous air pollution problems that demand immediate attention. One of these is global warming due to the greenhouse effect. Includes 11 experiments for young scientists.

Katara learns the truth about Aang's mysterious past, and Sokka reveals how he saved the Northern Air Temple from the Fire Nation.

Describes what air pollution is, how it is bad for the whole body, symptoms, diseases and disorders, and how pollution can be reduced for better health.

Examines the science of air pollution; discusses related challenges presented by globalization, politics, and basic human needs; and explores manmade and natural pollution.