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This eight-volume set covers all major areas of science, engineering, technology, mathematics and the medical and health sciences, while providing a comprehensive overview of current scientific knowledge and technology. Consisting of alphabetically arranged entries, it provides a user-friendly format that makes the broad scope of information easy to access and decipher. Entries typically describe scientific concepts, provide overviews of scientific subjects and define terms. Longer entries conclude with a bibliography. The 5th edition has been completely updated and includes more than 75 new entries on key scientific topics in the news, including: DNA databanks, Crime Scene Investigations, Internet Search Engines, Podcasts, Weapons of Mass Destruction, Wireless Communications and much more.