Examines the scope of the garbage problem; describes how paper, glass, cans and plastic can be recycled; explains how to reduce waste by reusing materials and buying used goods; and tells how to selec
Examines the problems caused by the use of fossil fuels; describes alternative energy sources, including wind and solar power; and tells how to save energy at home and at school.
Explains where water comes from and why the supply of drinking water is declining around the world, and describes how readers can conserve water by collecting rainwater and taking showers instead of b
