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Welcome to Wikipedia, a collaborative project to produce a complete encyclopedia from scratch. We started in January 2001 and are already working on 52364 articles (in the English version), with more being added and improved all the time. Anyone, including you, can edit any article right now, without even having to log in. You can copyedit, expand an article, write a little or write a lot. See the Wikipedia FAQ for more background information about the project, and the help page for information on how to use and contribute to Wikipedia.

The content of Wikipedia is covered by the GNU Free Documentation License, which means that it is free and will remain so forever. See wikipedia:copyrights for the details and open content and free content for background.

Current events

Current events - Israeli-Palestinian conflict - West Nile virus - Bruce Paltrow - Sputnik I - John Walker Lindh - Claus von Amsberg - Bertrand Delanoë - Quaoar - Nobel Prize

Philosophy, Mathematics, and Natural Science

Astronomy and astrophysics - Biology - Chemistry - Earth science - Mathematics - Philosophy - Physics - Statistics

Social Sciences

Anthropology - Archaeology - Economics - Geography - History - History of science and technology - Language - Linguistics - Political science - Psychology - Sociology

Applied Arts and Sciences

Agriculture - Architecture - Business and industry - Communication - Computer science - Education - Engineering - Family and consumer science - Health science - Law - Library and information science - Public affairs - Technology - Transport

Culture

Classics - Cooking - Critical theory - Dance - Entertainment - Film - Games - Handicraft - Hobbies - Literature - Music - Opera - Painting - Recreation - Religion - Sculpture - Sports - Theater - Tourism - Visual arts and design

Other Category Schemes

About Wikipedia category schemes - Library of Congress catalog scheme - Dewey Decimal System - Wikipedia arranged by topic - Historical timeline - Historical anniversaries - Reference tables - Biographies - Current events

About the project:

Announcements - FAQ - Policy - Bug reports and feature requests - Wikipedia and Nupedia - Wikipedians - Wikipedia Commentary - Mailing lists - Wikipedia Chat - New topics - Brilliant prose - Requested articles - Help desk - Wikipedia utilities - Wikipedia database download - Public domain resources - Sandbox - Friends of Wikipedia

Press coverage:

The New York Times Magazine (December 9, 2001) - The New York Times (September 20, 2001) - MIT's Techreview (September 4, 2001)

Wikipedias in other languages

About the non-English Wikipedias - Afrikaans - Arabic (Araby) - Basque (Euskara) - Catalan (Català) - Chinese (Hanyu) - Danish (Dansk) - Dutch (Nederlands) - Esperanto - Estonian (Eesti) - French (Français) - Frisian (Frysk) - German (Deutsch) - Italian (Italiano) - Japanese (Nihongo) - Latin (Latina) - Norwegian (Norsk) - Polish (Polska) - Portuguese (Português) - Russian (Russkiy) - Serbocroatian (Srpskohrvatska) - Slovene (Slovensko) - Spanish (Castellano) - Swedish (Svensk)