Wikipedia openly displays edit history and editorial disputes to assess trustworthiness

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.

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.

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.

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.

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.

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 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.

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.

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.

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.

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.

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.

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.

Wikiracing involves moving between two articles in the fewest clicks

The quirky pastime has evolved into a competitive event at yearly Wikimedia conferences, highlighting the interconnectedness of human knowledge. Neuroscientific research suggests lateral thinking is a crucial skill found in successful Wikiracers.

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.

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."

Bad Ancient: a site to fact-check claims about the ancient world

Peruse popular questions about ancient Rome, Egypt, Greece, and more, from whether Greek boxers were ripped or to what extent Alexander the Great conquered the world.

Unlike the models made by large AI companies, open-weight models can have their safeguards removed or weakened, a process that has become increasingly easy and may expose users to harmful information.

This removal is made possible by developers making the parameters behind their models publicly known. By adjusting these parameters, users can modify how the model processes and provides information. Many of these models can be downloaded locally, preventing developers from seeing how people are using them.

If a publisher wants to sell fan fiction, they encourage writers to change key details

Historically, companies that publish popular fan fiction have their authors change a few details—like character names, settings, or other details—to avoid potential copyright violations. Many believe the risk is worth the reward, though the legality remains murky. (Some users may experience a paywall.)

Novels sometimes use unreliable narrators

When we read a book, we’re effectively forced to take the narrator’s word for what’s unfolding. But what if that narrator has a biased take on those events? What if, in a general sense, that narrator can’t be trusted? Enter the unreliable narrator, a strategic way of shaping a story that adds an additional layer to the narrative.

Craigslist intentionally avoided user reviews

Although its competitors expanded their sites by adding user reviews and comments, Craigslist avoided them, recognizing that it would compromise the integrity of the site.

Nature simultaneously published three papers on DNA—only the first made history

Papers by Watson and Crick, Wilkins, and Franklin were fast-tracked without peer review, and their order was arranged between lab heads and editors. Franklin's appeared last, making her paper read as though supporting Watson and Crick—because they'd already incorporated her data before it was published.

A database tracking water conflicts for thousands of years

This open-source database has logged more than 4,000 conflicts around water across 100 countries, cataloging water as a casualty, trigger, or weapon of the conflict.

See how the concept of verification and addition to the blockchain works in real time.

Every transaction made via bitcoin is recorded on its blockchain—the decentralized, distributed ledger that provides a permanent and transparent record of the currency's entire history. While that may sound abstract, the technology allows anyone to monitor and confirm each of the transactions.

Revocable trusts are more flexible than irrevocable trusts

Irrevocable trusts are almost impossible for the grantor to change or dissolve. With a revocable trust, the grantor can alter or dissolve the trust at any time. However, there are upsides to irrevocable trusts, too—such as the fact that they’re typically not subject to estate taxes, unlike revocable trusts.

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

Visualize how CRISPR-Cas9—a type of immune system used by single-celled organisms to attack invasive viruses—targets and makes precise changes to a gene's DNA.

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

This site reaches millions of visitors who are tired of AI chatbots and seeking human connection. Pretend to be an AI chatbot and ask questions, provide answers, and draw for people in real time.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

See 33 images that became central to huge scandals, including a young Charles and Camilla, Michael Jackson's baby on a hotel balcony, and Hugh Grant's mugshot.

Hookworm infection, though risky, may help fight certain autoimmune conditions by tamping down the immune system's inflammatory response.

How the most famous Ebola book, The Hot Zone, which sold 3.5 million copies and was translated into 30 languages, got aspects of the disease so wrong.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

A century of Billboard issues documenting the evolution of popular music.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Many legends about George Washington, including his supposed wooden teeth and the story of cutting down the cherry tree, lack evidence.

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

Famed poet TS Eliot rejected the manuscript for George Orwell's political fable 'Animal Farm,' writing that its criticism of authoritarianism was not 'the right point of view.'

Double world record holder Hunter Ewen helped conquer his fear of balloons, called globophobia, by training to win Guinness World Record titles for balloon inflation.

An investigation suggests a Scottish island became awash in forever chemicals via seafoam and seaspray—raising questions about what that means for the safety of other coastal areas.

Recent research found that the brain doesn't seem to massively rewire following amputation—upending earlier beliefs about the cause of phantom limb pain.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Some renewable energy sources may weaken the resiliency of electric grids by removing outage buffers provided by coal- and natural gas-fired plants, which provide the system with more time to find a new power source if a plant goes down.

Frank Lloyd Wright's houses are historically hard to sell because they're old, subject to local landmark commissions, and often unfashionable

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.