This freshly updated book will introduce you to the whole field of science, from physics, chemistry, biology, information technology, Earth sciences and astronomy to new fields such as genetic engineering, nanotechnology, telecommunications and the preservation of planet Earth. It includes: - Clear explanations of over 2.500 scientific terms - Over 1.500 illustrations and diagrams - Over 140 experiments, activities and observations to carry out - A quick-reference dictionary defining over 1.500 scientific terms - Test-yourself question pages