A good general purpose database. Start here for most topics.
Offsite password: empirelink or sutherland
Remember, the "magic" in a Wikipedia article is down at the bottom. Look for External Links, Further Reading and References and follow the links. Learn more about How to Use Wikipedia Wisely.
Opposing Viewpoints features VIEWPOINT essays (opinionated pieces) on a large number of controversial topics, along with news items, reference articles, media and much more.