An internet encyclopedia of mythology, folklore, and religion.

Provides a complete, single-volume reference to the social, legal, economic, psychological and political issues surrounding the adoption experience and its unique terminology.

An ambitious, even audacious project to organize and make available via the Internet virtually all information about life present on Earth.

Search over 2 million records with images, video and sound files, electronic journals and other resources from the Smithsonian's museums, archives and libraries.

Features articles and reports on art, design, history, culture, science, technology, and geography.

Features more than 100 trusted sources, including encyclopedias, dictionaries, and thesauruses with facts, definitions, biographies, synonyms, pronunciation keys, word origins, and abbreviations.

Provides natural resource professionals and the public the scientific knowledge and tools they need to achieve their objectives.

An extensive free online encyclopedia and dictionary of over 300,000 cross-referenced and interlinked topics with over 16,000 photos and illustrations and over 2000 maps, specialising in information not found in other encyclopedias and dictionaries.