Discusses the properties of electricity and describes how it is made and used.

In this revised edition of his classic, Richard Dawkins demonstrates how cooperation can evolve even in a basically selfish world. Contains two new chapters and a wealth of new insights into the biological world.--From publisher description.

Explores the secrets of the Earth, answering questions about the what lies beneath the Earth's crust, why sea water is salty, what the ocean floor looks like, why Africa is splitting apart, and other topics.

Publisher's description: One of the greatest challenges facing chemists and chemical educators today is conveying the central importance and relevance of chemistry to students and society at large. Chemistry Connections: The Chemical Basis of Everyday Phenomena highlights the fundamental role of chemical principles in governing our everyday experiences and observations through a collection of provocative, topical questions. It explains the fundamental...

Uses brief text, illustrations, quizzes, games, and experiments to explain all about sound, which sounds animals and humans can hear, how sound can smash matter, and how it can heal.

"Explains esssential facts about magnets, including magnetic fields, Earth's magnetism, electromagnets, and magnetic trains. Includes experiments"--Provided by publisher.

An introduction to the world of nature, full of hands-on experiments and projects for all the family.

"For 12,000 years the Galactic Empire has ruled supreme. Now it is dying. But only Hari Seldon, creator of the revolutionary science of psychohistory, can see into the future - to a dark age of ignorance, barbarism, and warfare that will last thirty thousand years. To preserve knowledge and save humankind, Seldon gathers the best minds in the Empire - both scientists and scholars - and brings them to a bleak planet at the edge of the galaxy to serve...

Introduces electricity and circuits, as well as some of the electrical devices that are found in the home, such as refrigerators, CD players, and hair dryers. Includes related activities.