
From School Library Journal
Grade 9 Up. Updating a 20-volume set for a 5-year revision of Science and Technology is a difficult task. When original articles are written by experts in their fields, basic information may remain the same, but it is hoped that some "recent developments" would be added. Updated materials are evidenced in entries such as Asia, climate modeling, geologic thermometry, and global positioning systems. In some sections, such as compact disc, computer graphics, electric-power generation, gravitation, nuclear engineering, and production of human insulin, there are no changes to the text, but the bibliographies have been updated. Entries on acquired immunological tolerance, aircraft design, fingerprinting, industrial trucks, and narcotics have not been updated. There are new entries in this revision, such as climate history, clinical immunology, fullerene, global warming, geographic information systems, object-oriented programming, and nuclear medicine. Some of the entries have been completely rewritten by new authors, such as those on acquired immune deficiency syndrome, aircraft-collision avoidance system, breast disorders, geological time scale, North America, nuclear magnetic resonance, and radiation chemistry. Topics from 1994-1997 yearbooks, such as hanta viruses, are not included in this revision. According to the publishers, 23% of 7100 entries are new or totally revised, 1750 of 13,000 illustrations are entirely new, and 6 color plates are new. Th Read more...