Presents encyclopedic information on various fields of scientific study, including physics, chemistry, biology, astronomy, and Earth science.

Discusses the world's oceans, the animals that live in them, and the threats they face from overfishing, pollution, and global warming.

Contains clear explanations of more than 2,500 scientific terms, and includes listings for 1,000 recommended Web sites.

Revamped, paperback edition of an outstanding science resource which can be enhanced by visiting any of over 1,000 recommended, regularly reviewed web sites, or

This freshly updated book will introduce you to the whole field of science, from physics,chemistry, biology, information technology,Earth sciences andastronomy.