Grzimek's Animal Life Encyclopedia
A completely revised and updated version of the original work, this classic animal life encyclopedia, which groups animals by major scientific classifications, incorporates recent developments in the animal world as noted by prominent advisors and contributors from the scientific community.

New Book of Popular Science
Geared to student readers, this leading science encyclopedia provides articles conveniently arranged into scientific categories, supplemented with scores of tables, photographs and special feature boxes. Its science games, puzzles, and brain teasers as well as weekly science current events stories adds to its educational enjoyment.

Science Online
Science Online is a curriculum-oriented database that offers a comprehensive, authoritative overview of the sciences. Diagrams, essays, definitions, and biographies are arranged by topic and contain thousands of hyperlinks. More than 600 experiments are also included, covering all of the key principles of science. Encompassing a broad range of scientific disciplines, Science Online provides students, teachers, and researchers with an updated, easy to use resource.

Science Resource Center
Science Resource Center is an in-depth, comprehensive source for all science related needs. It provides accurate, up-to-date coverage of key concepts in earth science, life science, physical science, science and technology and much more. Multimedia images, audio and video clips as well as over 50 reference books and nearly 200 full-text periodicals are included. In addition to topic overviews, biographies, experiments and current trends it also includes current state and national high school standards.