Encyclopedias

Links:

Encyclopedia Mythica

Freebase - an open, shared database of the world's knowledge

Homework Help offers chemistry for kids and chemistry homework help at DiscoverySchool.com.

Martindale's 'The Reference Desk' - International Art, Business, Science & Technology

Musipedia The Open Music Encyclopedia

Probert Encyclopedia

Symbols.com

The Funk & Wagnalls Knowledge Center

The Skeptic's Dictionary

whatiscom

Wikipedia