Authoritative sites covering biology and other sciences. Great one stop site for comprehensive resources. Compilers include the libraries of major research institutions (including Cold Spring Harbor Laboratory, Rockefeller University, Harvard University).
This site provides biologists with access to NBII data, as well as a thesaurus and publications library (see Toolkit). NBII Life offers high quality images of nature (animals, plants, etc.) free (for most noncommercial use).
Consider this site to be your virtual text to understanding neurons. Begin with the "How to use this program" link and then work your way through all topics of interest. Site built by University of Toronto Medical School.
NextBio Basic provides access to a curated, correlated database of public data; integrated literature, clinical trials, and scientific news. In addition, NextBio Basic allows registered users to personalize their NextBio experience and communicate, collaborate, and share data with the entire NextBio community. Registration required.
A global science gateway connecting you to national and international scientific databases and portals. WorldWideScience.org accelerates scientific discovery and progress by providing one-stop searching of global science sources. Maintained by the Office of Scientific & Technical Information, which makes R&D findings available and useful to advance discovery.