Multidisciplinary database; this is a great database to start your research and then go to some of the more specialized science databases to further your research.

Indexes science journals; many citations include abstracts

EndNote is a bibliographic management tool. It is a fantastic resource for managing your citations and also for integration into word processing programs to automatically format your in-text citations and references/bibliography.

Citations and abstracts from over 2,000 journals in the sciences.

A great, multidisciplinary database; best for historical information about biology topics as well as older issues of many biology and science journals.

Another multidisciplinary, science database with full text journal articles.

Database of science citations, also multidisciplinary. You can also use EndNote Web, a bibliographic management tool, for free through this database. Just sign up for an account.