Encyclopedia of Earth
"Encyclopedia of Earth (http://www.eoearth.org/) seeks to become the world's largest and most authoritative electronic source of information about the environments of Earth and their interactions with society.
The EoE is an Open Source project that uses a modified version of MediaWiki as its authoring platform. The EoE's author wiki is restricted to individuals judged to be expert in their field by an editorial board, and articles are reviewed and approved by a subject-specific editor prior to publication.
The editor is a faculty member at Boston University and the library has had some input into this project."
Information above is quoted from a posting to the STS-L Listserv.