Academic Search Premier An index to almost 5,000 scholarly journals in all disciplines, many of which have full text.
ArXiv This archive of electronic materials contains almost half a million papers in Physics, Mathematics, Computer Science, and Quantitative Biology. They aren't peer reviewed, but Cornell University, who runs the site, has an active editorial board that oversees what is included.
PubMed The major index to medicine, animal and human.
ScienceDirect College Edition A full-text database for journals in the life, medical, social, behavioral, and physical sciences.
JSTOR (Journal Storage) Scholarly articles in over 150 academic journals. Articles date from the 1800s up to a "moving wall" of between one and eight years before the present. That means that there are no current articles. Coverage includes the arts, business, general science, the humanities, and social science.
Math DL The digital library of the Mathematical Association of America.
The Mathematical Association of America This page keeps you in touch with the latest from the world of mathematics, including new books and employment opportunities.
Mathematics web sites around the world Provides a search engine and a directory of useful mathematics sites, including Societies and Associations; Mathematics Journals; Subject Area Pages; and Mathematics Software. From the Penn State Mathematics Department.
Science in the Headlines Provides summaries of reports on hot science topics, from AIDS to Urban Development. Link to the full text of reports and to related publications. From the National Academy of Science.
Scirus Science- and social science-specific search engine. Searches 90 million science-related Web sites. Also searches journal sources like Medline and ScienceDirect. Search Scirus from the box below.
S.O.S. MATHematics Offers straightforward technical assistance for college students.
MathWorld Comprehensive and interactive mathematics encyclopedia intended for students, educators, math enthusiasts, and researchers.