* The most widely used science reference of its kind* More than 7,000 concise articles covering more than 90 disciplines of science and technology, all in one volume* Based on the content of the world-respected McGraw-Hill Encyclopedia of Science & Technology, 9th Edition* More than 1600 two-color illustrations* Features numerous cross-referenences, an extensive index, and bibliographies* Appendix with biographical listings of important scientists, listings of scientific symbols and units, mathematical notations, fundamental concepts, and more* Extensively updated with 1500 new and rewritten articles* Includes coverage of the hottest areas of science and technology, including biomedical science, chemistry, cosmology, information science, environmental science, nanotechnology, and theoretical physicsThe McGraw-Hill Editorial Staff, based in New York City, also edits the renowned McGraw-Hill Encyclopedia of Science & Technology, now in its ninth edition, and is one of the most skilled, experienced and respected editorial teams in the field of scientific publishing.