About Science - http://home.about.com/science/index.htm?PM=59_0240_T
Links to Science sites. Each site on About, the Human Internet, is run by a professional About Guide. Guides build a comprehensive environment around each of their specific topics, including the best new content, relevant links, How-To's, Forums, and answers to just about any question.
BUBL LINK: Science - http://link.bubl.ac.uk/science/
A catalogue of selected Internet resources covering all academic subject areas and catalogued according to DDC (Dewey Decimal Classification). All items are selected, evaluated, catalogued and described. Links are checked and fixed each month. LINK stands for Libraries of Networked Knowledge.
Librarians' Index to the Internet: Science Topics - http://lii.org/search/file/science
The Librarians' Index to the Internet is a searchable, annotated subject directory of more than 6,600 Internet resources selected and evaluated by librarians for their usefulness to users of public libraries.
Science Online - http://www.kcls.org/erout/goto.cfm?f=scionline &d=79
Science-oriented diagrams, experiments, essays, definitions, and biographies.