Opposing Viewpoints in Context - (Gale) A social issues database providing viewpoint articles, topic overviews, statistics, primary documents, links to websites and full-text magazine and newspaper articles.

ProQuest - The largest aggregated database of periodical content in a wide range of subjects.  

SIRS Issues Researcher - (ProQuest) Provides argumentative and analytical articles on current issues and hot topics.  Although a K-12 resource, this database is useful for college students as well.