This series looks at practical ways in which children can protect the environment. Simple activities show what the problems are, and suggest how they can make a real difference in preserving the planet's natural resources through recycling. Each title features nuggets of fascinating information, pages of activities using easily available materials, a comprehensive glossary and index. Clean Our Air concentrates on what air is, why it is important to us, how it is polluted and what we can do to keep it cleaner and ourselves healthier.