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An online scientific and technical information service (subscription required) that provides access to more than 200 in-depth databases in science and technology to offer direct links to the scientific literature, patents, and chemical catalogs.

Descriptions, ratings and links for a few "top internet sites" in biology, chemistry, computer science, mathematics, medicine, physics, and psychology.

Links to resources in all main science areas, plus newsgroups, constants, history, teacher resources and science analogies.

Something interesting, every day. Brief summaries and online reviews of an eclectic selection of science-related web sites.