The unofficial theme song for Wikipedia is based on 'Hotel California'

Wikipedia allows users to vote for what the last article on the site will be

Labeled as "humorous" on the site, the "Last topic pool" page lists various conditions where Wikipedia's final article would be written, including various end-of-the-world scenarios, instances where humanity might cease to exist, cases of Wikipedia becoming corrupted or uneditable, and the possibility of all possible knowledge having been written about.

The software for wikis—user-editable websites—was launched in 1995

Computer programmer Ward Cunningham created the WikiWikiWeb online application based on an offline system that helped track how ideas moved through his company. The application enabled users to collaborate and edit website content through a web browser, as well as link pages without requiring a structured navigation scheme.

On average, about five edits are made on Wikipedia every second

As of 2024, the site is 90 times larger than the 120-volume Encyclopedia Britannica, but its automation tools can often catch and revert inaccurate edits within 60 seconds. Its low-bandwidth, adless pages have allowed it to handle millions of site visits daily, even during times of high internet traffic.

Coverage of the 9/11 terrorist attacks helped shape Wikipedia's editorial policies

Launched nine months earlier, the site was featured on Yahoo's news page, attracting traffic from information seekers as dozens of new editors created hundreds of articles, including memorials, conspiracy theories, and donation and volunteer pages. Discussions between editors would begin establishing rules for handling breaking news events.

Wikipedia arose from a failed, for-profit online encyclopedia

Nupedia was launched in 2000 by internet entrepreneur Jimmy Wales and internet project developer Lawrence Sanger, only publishing articles written by experts after a cumbersome seven-step review process. The two developed Wikipedia to allow the public to write articles for future review, but shifting to self-moderation contributed to Sanger's departure in 2002.

A conversation with Wikipedia’s cofounder

In the early 2000s, the nonprofit free encyclopedia Wikipedia launched and became one of the most visited sites on the internet. This lengthy interview with cofounder Jimmy Wales provides insight into how the encyclopedia originated, how it is funded, its plans for the future, and a number of other facts about the hugely influential resource.

Wikipedia edit wars often reflect a strong commitment to accuracy between editors

Battles over grammar and capitalization, names and nationalities, and British versus American spellings of words have taken place due to the collaborative editing nature of the site. The most seemingly trivial debates are catalogued on the site's "Lamest edit wars" page.

In 2014, a Wikipedia monument was unveiled in Słubice, Poland

Created from fiber and resin, the $14,000 sculpture features four people holding the Wikipedia globe—the company's logo since 2003. An inscription on the monument pays homage to the anonymous editors who contributed to the site.

The Wiki Game: get to one Wikipedia topic to another as fast as you can

Wikipedia, the free, community-built encyclopedia, uses hyperlinks so users can explore topics within topics. This tool often leads readers to go down endless rabbit holes, from one topic to another, endlessly. Now, you can make a game of it by...

Wikipedia openly displays edit history and editorial disputes to assess trustworthiness

Unlike a journal article, which may be reviewed by up to three people before publication, popular Wikipedia pages may be reviewed thousands of times by editors, potentially enhancing their reliability. Less reviewed articles still require reliable third-party sources and remain subject to verification by bots and administrators who can undo edits.

Wikipedia articles are read more than 16 billion times every month

Nearly 300,000 volunteers worldwide help write, edit, and fact-check articles on the site in real-time, striving to ensure content is authored from a neutral point of view. All pages are freely accessible and must include citations to reliable, published sources.

Explore Wikipedia, but TikTok-style

Wikipedia's vast trove of information can be a bit dull to navigate. This homemade website takes real Wikipedia pages and places them in a swipeable format similar to TikTok, so you can learn about very random things in a similar mode as the culture-shifting TikTok app. Check it out here.

As of January 2026, 500 new articles are added to the English Wikipedia daily

The largest Wikipedia language edition features over 7 million articles, followed by the Cebuano edition (over 6 million) and the German edition (over 3 million). The longest article is the "2025 in women's road cycling" page, and the most edited is the list of personnel from World Wrestling Entertainment.

China has blocked the Wikipedia domain since 2015

The Chinese language version of the site had been blocked intermittently since 2004 due to pages featuring topics deemed controversial by the Chinese communist party, including the 1989 Tiananmen Square protests and Taiwan. Once Wikipedia switched to an HTTPS protocol—making it impossible to block individual pages—all Wikipedia pages were blocked.

Research suggests articles on Wikipedia are about as reliable as 'accurate' sources

Studies from Nature, The Guardian, the Journal of Clinical Oncology, and the Canadian Library Association, among others, did not identify significant errors, particularly in articles related to academic topics. The site is still considered an exploratory, tertiary source subject to systemic biases from its human editors, especially within controversial topics.

Every city has a song: Music writers identify one tune that represents their hometown, from Chicago to Buenos Aires

Staffers from SPIN magazine wade into the contentious waters of official anthems, making the case for their chosen track, from Chicago's "Tonight, Tonight" by the Smashing Pumpkins to the Bobby Bare rendition of "The Streets of Baltimore."

In 2013, an asteroid was named after Wikipedia

A main-belt asteroid previously labeled 274301 was renamed "Wikipedia" by the Committee for Small Body Nomenclature. First observed in 2008 by astronomers at the Andrushivka Astronomical Observatory, the asteroid was renamed based on a suggestion from a member of the Wikimedia Foundation in Ukraine.

Watch an orchestra perform Danny Elfman's theme for 'The Simpsons'

The composer (and former member of new wave band Oingo Boingo) said that the show's main theme, one of the most recognizable in TV history, came to him while driving. It's become a widely performed orchestral piece, including by the all-volunteer Puget Sound Symphony Orchestra, which you can watch below.

A 15-year bibliographic analysis identified systematic gender bias across Wikipedia

A 2024 study by the University of Barcelona found that 71.4% of all English biographies that appear on the front page are about men, and approximately one in five editors are women. Researchers suggest systemic imbalances in society further diminish women's contributions to the site by leaving them with less time to defend edits during editorial disputes.

Wikipedia's sister sites include directories of travel guides, species, and media

Like Wikipedia, volunteers around the world contribute to Wikivoyage, Wikispecies, and Wikimedia Commons to create freely accessible repositories of knowledge. Other projects include Wikibooks, a collection of e-books and annotated texts; Wikisource, which features source documents and historical texts; and Wiktionary, a dictionary covering over 170 languages.

Wikipedia's puzzle globe logo was developed by a 17-year-old

In 2003, the site held a contest for its users to submit designs for a new logo. Paul Stansifer submitted the winning design, which used the incomplete puzzle as a symbol for the encyclopedia being a work in progress. Symbols and letters would later replace text within Stansifer's colorful design.

LonelyWiki compiles obscure Wikipedia articles with fewer than 2,000 annual readers

LonelyWiki calls itself a museum of forgotten knowledge. A "lonely article" features real prose, at least 500 characters, no stub placeholders, and under 2,000 annual views. Each one represents a person who decided something was worth documenting without editorial commission or trending news.

The 'Jeopardy!' theme was originally written as a lullaby

Merv Griffin originally composed the song in 1963 as a way to help his son Tony fall asleep and claims he wrote it in less than a minute. The song, played during Final Jeopardy!, is called "Think." It's estimated that the song alone has earned Griffin over $100M.

One person has made edits to a third of all articles on the English Wikipedia

As of 2025, Steven Pruitt—known online as Ser Amantio di Nicolao—has made over 6 million edits and created more than 33,000 articles since he began contributing to the site in 2004. The Virginia native was named one of Time magazine's 25 most important people on the internet in 2017.

The US national anthem borrows its melody from 'The Anacreon Song,' a bawdy British tavern song that was popular in the 19th century.

Six Degrees of Wikipedia, where any two articles connect in six clicks or fewer

Enter any two topics (or use suggestions) and find the shortest path of links between them. The game playfully illustrates the vast interconnections of human knowledge.

Search set lists from more than 10 million live concerts, added and edited by fans

Taking cues from Wikipedia, this Setlist wiki allows fans and concertgoers to share which songs were actually played at live concerts, across genres. The database makes this niche information about what performers choose to play year-round available for the curious.

This interactive website features nearly 40,000 photos from Wikipedia for you to create visual mosaics with.

As of 2025, the Wikimedia Foundation funds 14 open-source, free knowledge projects

Since its founding in 2003, the nonprofit has provided financial, legal, and infrastructure support to Wikipedia and its sister projects (e.g., Wikinews), primarily by managing donations, which average $11, from readers. Additional funding comes from gifts exceeding $1,000, the Wikimedia Endowment, and providing Wikipedia content for commercial use.

The simple melody in 'Auld Lang Syne' has led to the song’s repurposing

In addition to becoming a standard tune to ring in the new year, the song has been reworked as a Dutch soccer anthem, a Japanese standard, and the South Korean national anthem. A significant part of its widespread use is that it has no copyright limitations. It helps, too, that it's simple melody is easy for even the most amateur singers to tackle.

AI scraping for LLM training data has significantly strained Wikipedia's infrastructure

From January 2024 to April 2025, the site's bandwidth increased by 50% as automated bots downloaded terabytes of data for the large language models powering AI tools. The Wikimedia Foundation found that bots accounted for 65% of the highest demand requests (e.g., videos) despite representing just 35% of page views.

As of 2025, Wikipedia is one of the top 10 most-visited sites in the world

Alphabet Inc.'s Google search engine and YouTube received nearly 150 billion combined visits in November, followed by Facebook, ChatGPT, and Instagram, which each received over 5 billion visits during the same span. With 4.42 billion visits for the month, Wikipedia ranked just behind Reddit's 4.85 billion.

'Lazy Sunday' was YouTube's first viral hit

Initially aired on television, the 2005 "Saturday Night Live" digital short featuring Andy Samberg and Chris Parnell took off on YouTube, becoming one of the platform's first viral videos. The song may be a joke, but its success underscored how online video could extend the lifespan of regularly televised content.

Woody Guthrie wrote 'This Land Is Your Land' as a sarcastic response to 'God Bless America.'

EY 'Yip' Harburg is the lyricist behind 'The Wizard of Oz'

The 1939 film’s songs were written by composer Harold Arlen and lyricist EY “Yip” Harburg. In an early draft of "Over the Rainbow," the movie's most famous song, Harburg scribbled "Some day I’ll wish upon a star + wake + find the darkness far behind me,” which would eventually become the iconic line, “Some day I’ll wish upon a star and wake up where the clouds are far behind me.”

In late 2007, Wikipedia became the world's largest general encyclopedia

The record had been held for approximately six centuries by the Yongle Encyclopedia, which was commissioned by the Yongle Emperor of the Ming dynasty in 1403 to preserve information from ancient and imperial China. The text comprised 22,937 manuscript rolls in 11,095 volumes.

'Take Me Out to the Ballgame,' the song that's now a 7th inning tradition at every MLB game, was inspired by a billboard advertisement.

Philip Roth once tried to correct details on one of his novel's Wikipedia pages

The Wikipedia entry for Roth's 2000 novel "The Human Stain" alleges that the book was based on the life of Anatole Broyard, a Black American writer who "passed" for white, something he shared in common with the main character in Roth's novel, though Roth said that wasn't true. When Roth tried to correct the error, Wikipedia editors told him he would need a secondary source to back up his claim.

Grokipedia is Elon Musk's rival to Wikipedia

Developed by xAI—a company Musk founded in 2023 to compete with OpenAI and Google—the site features a search bar where users can type in queries, which reports suggest are then answered by the same xAI model powering the Grok chatbot. Grokipedia describes Wikipedia as having "systemic ideological biases" and a "left-leaning slant."

Wind of Change investigates a Cold War rumor linking the CIA to a rock anthem

This hit podcast follows journalist Patrick Radden Keefe as he explores whether the Scorpions' 1990 power ballad "Wind of Change"—an anthem of the Cold War's end—was secretly written by the CIA as cultural propaganda.

'Defying Gravity,' from 'Wicked,' references 'Somewhere Over the Rainbow'

The melody in a crucial part of the song uses the first seven notes of "Somewhere Over the Rainbow," an intentional reference that composer Stephen Schwartz calls an "easter egg" that acknowledges the influence of the 1939 film.

Woody Guthrie wrote an erotic ode to Ingrid Bergman, which was unearthed years later by Guthrie's daughter.

The history of rickrolls (this isn't one)

Rickrolling describes a bait-and-switch meme in which a seemingly relevant hyperlink takes clickers to videos or gifs of Rick Astley’s 1987 single, “Never Gonna Give You Up." It's possible this seemingly ubiquitous internet prank can be traced to a 2006 segment of a radio show in rural Michigan. Erik Helwig called into the show during a listener comment segment and, without saying anything, played Astley's single for all those tuning in.

Find connections between Wikipedia articles utilizing a node mapping tool

Multiple Wikipedia articles can be placed on the map, each with its own node, and expanded to reveal related articles. The goal is to expand as many subsequent nodes as needed to connect articles and identify related concepts. Any node can be double-clicked on to open its respective Wikipedia page.

YouTube's 10 most viewed music videos of all time

YouTube arrived in 2005 with a short, innocuous video about the San Diego Zoo. Just 20 years later, it's one of the most popular websites and a go-to for countless music fans. This list of the site's most popular music videos analyzes how the videos hold up after reaching billions of views. The biggest takeaway? "Gangnam Style" is still a thrilling watch.

In 1998, Billy Bragg and Wilco recorded unreleased songs penned by Woody Guthrie.

Read the lyrics for 'The Star-Spangled Banner,' annotated by historians.

How 'O Come, O Come, Emmanuel' became a beloved, haunting Advent hymn

The text of the hymn is rooted in the ancient O Antiphons. The melancholic melody was traced to an anonymous 15th-century author. The hymn stands as one of the few standard Christmas carols actually intended to be sung during the season of Advent. Listen to the song's history here.

Explore a map of songs about places, including 'China Grove,' 'I Left My Heart in San Francisco,' and 'Stranger in Moscow.'

The lyrics to John Denver's 'Take Me Home, Country Roads' reference landmarks that are mostly in western Virginia rather than West Virginia.