Library online database.  An online version of the popular McGraw-Hill Encyclopedia of Science and Technology.  Additional features include a science dictionary, news articles, more than 2,000 biographies of leading scientists, a student center with study guides and bibliographies, a section on data and tables, and links to related sites. 

Gateway to government science information, searchable across numerous databases and science websites.  Topics include: Agriculture & Food; Applied Sciences & Technology; Astronomy & Space; Biology & Nature; Math, Physics and Chemistry, among others.  Offers science education resources for kids, parents and teachers.

Well-organized access to reliable, librarian-selected Internet resources from the Internet Public Library (IPL).  Organized by subject, with annotated sites.  Can be searched by keyword, subject, title, description or links.  Good homework resource.