Encyclopedias

Encyclopedia Britannica Online (http://search.eb.com/)
Users may browse articles alphabetically, by subject or geographically. Also includes a “Year in Review” of events and people and a timeline to trace selected topics through history.

Encyclopedia.com (http://www.encyclopedia.com/)
Includes 57,000 frequently updated articles from the Columbia Encyclopedia, Sixth Edition. Each article is enhanced with links to newspaper and magazine articles, as well as pictures and maps.

How Stuff Works (http://www.howstuffworks.com/)
Source for clear, reliable explanations of how everything around us actually works.