Gr 6 Up-This encyclopedia surveys 472 scientists whose accomplishments cross many disciplines and eras. Men and women of different nationalities and races are represented. Each entry begins with a box containing the scientist's area(s) of study, contributions, and a timeline of major events in the subject's life. The main article follows, broken up by one or more boxes that contain further coverage of the individual's achievements. These essays are 750 to 1250 words long, with some figures, such as Albert Einstein, requiring a bit more space. The black-and-white photographs and illustrations are of average quality. Bibliographies at the end of each article, a phonetic guide for difficult names, and a comprehensive index at the end of each volume are welcome additions. Also worthy of note, are the glossary, the country list of scientists, the list of areas of scientific achievement arranged by discipline, and the general timeline of scientists born between 625 B.C.E. and A.D. 1963. Because they lack visual distinction and color, these volumes will probably not be picked up by students as casual reading. Also, the articles are too short for in-depth research. However, the set does introduce many notable people and concepts, sparking interest and providing jumping-off points for further exploration.-Linda Wadleigh, Oconee County Middle School, Watkinsville, GA
Profiles 472 figures in the history of scientific investigation, from medical researcher Maude Abbott to inventor Vladimir Zworykin. Focusing on the "hard" sciences, entries include a list of contributions, a time line, major awards and honors, and milestones in education, research, employment, and private life. Boxes within each article provide further coverage of specific theories, research, inventions or discoveries. Highschool readers in particular will benefit from the clear explanations, glossary, and pronunciation guides. Annotation c. by Book News, Inc., Portland, Or.