Welcome to Citizendium

Welcome! We are an encyclopedia project, and more. We are a different sort of Web 2.0 project: We offer gentle expert oversight. We use our real names, not pseudonyms. We're collegial. We are working on over 2,400 articles. We aim at credibility, not just quantity. Join us! Regular smart folks and experts--welcome! Response within 24 hours, guaranteed. Learn about us For readers: About the Citizendium For contributors: How to get started as an author Project Home Support us We're a 501(c)(3) non-profit, and we need your support. If you shop at Amazon or Barnes & Noble and you access these sites by the links provided here, we'll be getting donations at no cost to you (read more) - Search All Products

Approved articles Some of Citizendium's finest [ about ] Newly approved and newly nominated articles Entry points Workgroup homepages are Φ symbols.     Natural Sciences Astronomy Φ - Biology Φ - Chemistry Φ - Earth science Φ - Mathematics Φ - Physics Φ     Social Sciences Anthropology Φ - Archaeology Φ - Economics Φ - Education Φ - Geography Φ - Countries of the world - Law Φ - Linguistics Φ - Politics Φ - Psychology Φ - Sociology Φ     Humanities Classics Φ - History Φ - Literature Φ - Philosophy Φ - Catalog of famous philosophers - Religion Φ - Catalog of religions     Arts Architecture Φ - Music Φ - Theater Φ - Visual Arts Φ     Applied Arts and Sciences Agriculture Φ - Business Φ - Computers Φ - Engineering Φ - Food Science Φ - Healing Arts Φ - Health Sciences Φ - Journalism Φ - Library and Information Science Φ - Media Φ - Military Φ     Recreation Games Φ - Hobbies Φ - Sports Φ