Elite Sites Web Directory
Encyclopedias
Encyclopedia.com from Electric Library
Free resource offers more than 50,000 concise articles.
http://www.encyclopedia.com
Wikipedia
A free encyclopedia built collaboratively using Wiki software. (GNU Free Documentation License).
http://en.wikipedia.org/wiki/Main_Page
How Stuff Works
Articles explain how hundreds of things work, from elements of the human body to space-age technology.
http://www.howstuffworks.com
