Presents an introduction to earth sciences, describing the Earth's composition, geography, weather and climates, and more. Includes information on why and how to protect the Earth, and activities.
A study of the plant world, including what a plant is, what it does for us, how to grow a garden, endangered and dangerous plants, and more. Includes activities.
An illustrated encyclopedia of concise articles for students of all ages, covering such major areas as the universe, history, the human body, animals, plants, art and entertainment, and sports.
