A good interdiscplinary database. Note that you can limit your search to peer reviewed articles. Also includes general interest / news sources (magazines, papers, transcripts and the like).
Soc Abstracts is the core database in sociology and the best source for current peer reviewed research. Use the Descriptors on the right hand side of the search results screen to help you refine your keywords.
Citations and abstracts to more than 2 million dissertations and masters theses in all fields produced in North American colleges and universities from 1861 to the present, and from around the world since 1988. The full text of dissertations published since 1997 is also available for download.
Focus on public policy. Journal articles; books; government documents; statistical compilations; committee reports; directories; serials; reports of public, intergovernmental, and private organizations; and most other forms of printed literature from all over the world are indexed.
Indexes scholarly and general interest material as well as government info. (Does provide coverage of health-related environmental issues as well as income inequality.)
LexisNexis Academic provides electronic access to hundreds of newspapers from around the U.S. and the world, most of them within one day of publication. Retrospective coverage varies but in some cases goes back to the 1980s.