One of the key things to remember when selecting a topic is to choose a subject that is of interest to you. It makes the research process more enjoyable and we tend to produce a better product. Some places to get ideas for papers:
CQ ResearcherThis link opens in a new window(1991- present), includes original, comprehensive, and unbiased reporting and analysis on issues in the news.
Opposing Viewpoints in Context (Gale)This link opens in a new windowIncludes pro and con viewpoints on a wide range of social issues, from terrorism and gun control to stem cell research.
A good place to start. Ebook Central is an ebook collection of multidisciplinary titles.
Ebook CentralThis link opens in a new windowAn ebook collection of more than 150,000 multidisciplinary titles in business, humanities, life and physical sciences, medicine and health, information technology, engineering, social sciences, public policy, education, and general reference.