physiological effect

Presents information, in simple text and photographs, about what it is like to live on a space shuttle and includes descriptions of everyday activities such as eating, drinking, and sleeping. Includes photo glossary.

A simple introduction to how the sun and its warmth affect the Earth.

Examines tobacco's impact on society an its harmful physical effects through animation, interviews, staged debates and original music.

Explores how diseases caused by mutant germs, such as SARS, affect the world, discusses how they originated, and offers suggestions as to how their spread can be prevented in the future.

Looks at the weather phenomena known as a blizzard, explaining what blizzards are, where and why they occur, and what conditions are like during a blizzard, and discusses how people prepare for and cope with these fierce snowstorms.