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What if I told you there’s a website dedicated to the things we don’t know? Not a collection of answers, but a living catalog of mysteries, gaps, and unanswered questions that haunt the sciences. It doesn’t just list facts — it’s an encyclopedia of enigmas. This isn’t Wikipedia. It’s Wikenigma.
Wikenigma launched in 2016. The founder is Martin Gardiner — not to be confused with Martin Gardner, the legendary mathematics writer. Gardiner was once a contributor to Improbable Research, the group behind the Ig Nobel Prize, which honors science that makes you laugh and then think. Gardiner’s new mission: to make people think about what we don’t know, not just what we do.
By May 2026, Wikenigma had grown to 1,280 entries. That’s more than double the 500 entries it had in 2020 — a speed of growth that reflects both the scale of our ignorance and the enthusiasm of contributors who are fascinated by unsolved problems. These entries come from across the sciences: open questions in biology, gaps in physics, unresolved mysteries in human behavior, and holes in historical knowledge.
The underlying philosophy of Wikenigma is stated right on the homepage: it’s about “documenting fundamental gaps in human knowledge.” Gardiner, as curator, enforces a strict rule: he rejects entries that are unfalsifiable. This means only problems that could, in theory, be solved are accepted. The site avoids conspiracy theories, speculative philosophy, or claims that can’t be put to the test. This keeps the focus on real, documented mysteries that researchers actively wrestle with.
Wikenigma is not commercial. It runs no ads, and registration is optional. Its content is licensed under Creative Commons Attribution-Noncommercial-Share Alike 4.0 International. This license allows the information to be used and shared freely for noncommercial purposes, but it prohibits for-profit AI scraping. That clause is unusual among wikis and reflects ongoing debates about AI training and intellectual property on the internet.
The site itself runs on DokuWiki, a PHP-based wiki engine. DokuWiki is known for its simplicity and for not requiring a database — a practical choice for a project run by a single curator with help from the broader science-minded public.
Each Wikenigma entry is concise, often just a paragraph or two, but almost always includes links to other scholarly sources. This makes it less a final destination and more a launchpad — a place to catch a glimpse of a problem and then dive deeper, if you dare. Most entries remain open, unresolved since the day they were posted.
One entry, however, is marked “resolved.” It’s the story of the so-called “beeswax wreck mystery.” For years, this mystery puzzled historians and underwater archaeologists: a centuries-old shipwreck carrying a cargo of beeswax was known to have vanished, and its location was unknown. The solution came not from a professional, but from a fisherman who discovered the missing shipwreck buried beneath boulders. This was a rare case where an open problem documented on Wikenigma actually got a conclusion while people were watching.
The idea for Wikenigma was inspired in part by the mistaken belief that science has already answered the most important questions. Big Think, in a feature about the site, commented that Wikenigma helps counter the feeling that the “sciences are complete.” By documenting the unknowns, it reveals just how vast, and sometimes bizarre, the gaps in our knowledge really are.
An example: one entry asks why humans blush. Blushing is a uniquely human phenomenon — visible reddening of the face triggered by social emotions like embarrassment. There are theories about why this happens, but no consensus and no clear evolutionary explanation. The entry links to peer-reviewed articles, but leaves the central question open.
Another entry asks about the origins of golf. Historians know the modern game emerged in Scotland, but its exact lineage and sources are debated. The trail grows hazy as you move back through the centuries, and the true point of invention is lost to history. The entry includes references to ancient stick-and-ball games, but admits no one can say for sure how or when golf actually began.
A third Wikenigma entry documents the cause of the Mayan collapse. The classic Maya civilization, known for its monumental architecture and advanced calendar, experienced a sudden decline around the 9th century CE. Archaeologists and historians have cited climate change, warfare, social upheaval, and more, but the mystery remains open. The entry provides links to articles and studies, but no definitive answer.
Wikenigma’s entries are not just limited to the hard sciences — they include unsolved questions from anthropology, history, psychology, and even sports. The site’s scope reflects Gardiner’s background with Improbable Research, which celebrates oddities and edge cases in science.
Wikenigma’s approach to curation stands out. Gardiner’s insistence on falsifiability means that users can’t just add supernatural claims or wild speculation. Every mystery must, at least in principle, be testable. This curation philosophy draws a clear line between Wikenigma and more rumor-driven sites.
The site’s growth has been steady. From 2016 to 2020, it gathered 500 entries, a pace of about 125 entries per year. But between 2020 and 2026, another 780 entries were added, suggesting an average of 130 new mysteries per year in that period. This steady accretion shows there is no shortage of “known unknowns” in every field.
Wikenigma achieved wider visibility when Annie Rauwerda, an internet personality known for the “Depths of Wikipedia” social media accounts, mentioned it. Rauwerda’s accounts are famous for highlighting strange and unexpected corners of Wikipedia. Her mention brought a new wave of visitors who were already primed to appreciate the weird and the unknown.
Most Wikenigma entries are short. This brevity is by design. The goal is not to explain or solve a mystery, but to document its existence and give readers a jumping-off point for deeper exploration. Every entry includes links to outside scholarship, research, or primary sources, allowing users to investigate further if they wish.
The site’s noncommercial status is notable in today’s internet. Many knowledge-sharing sites have pivoted to ad-driven models or introduced paywalls. Wikenigma’s open but noncommercial license makes it an outlier. The prohibition on for-profit AI scraping reflects a concern among curators and contributors about the use of public data to train commercial AI systems.
Gardiner’s role as curator is hands-on. He reviews each entry submission, enforcing the falsifiability rule and ensuring the quality of links and references provided. This personal involvement has kept the site focused and on-mission, even as the number of entries has grown into the thousands.
The site’s focus on open problems sets it apart from other online encyclopedias. Traditional reference works are designed to summarize what is known. Wikenigma is built around what is not known. It reverses the standard model of encyclopedic knowledge, putting the mysteries front and center.
Wikenigma’s technical underpinnings are also part of its philosophy. The choice to use DokuWiki, a lightweight and database-free wiki platform, reflects a desire for simplicity and sustainability. DokuWiki allows easy editing and maintenance by a small team, and doesn’t require the server resources of larger wiki engines like MediaWiki.
The Creative Commons license under which Wikenigma operates is widely used for open educational resources, but the “Noncommercial” clause is less common among wikis. This clause prevents companies from scraping and reselling the content, a concern that has become more pressing as AI models are increasingly trained on open web data.
The site’s history includes only a handful of mysteries officially marked as “resolved.” The beeswax wreck mystery is the best-known example. In that case, a fisherman’s accidental discovery provided the missing evidence, and the entry was updated to document the solution.
Wikenigma’s list of open problems includes questions ranging from biology to sports. “Why humans blush” is a psychological and evolutionary enigma. “Origins of golf” concerns the history of human leisure and the transmission of sports across cultures and centuries. “Cause of the Mayan collapse” bridges archaeology, climate science, and social theory.
The entries reflect a certain sense of humor and playfulness, echoing the tone of Improbable Research. Some problems are deeply serious, while others are quirky or borderline absurd. The juxtaposition of the mundane and the profound is part of the site’s charm.
Wikenigma’s entries are not exhaustive. Most are stubs — designed to pique curiosity and prompt further investigation, not to provide a complete literature review. Gardiner has said that the site is meant to be a map of the unknown, not an atlas of answers.
Big Think’s feature on Wikenigma described it as an antidote to “the feeling that the sciences are complete.” The very existence of the site is a reminder that science is full of questions. The number of open entries has nearly tripled in a decade — from its launch in 2016 to May 2026, going from 0 to 1,280 known unknowns.
Before Wikenigma, most online wikis focused on compiling what is currently known. Wikipedia, for instance, has policies requiring references to reliable sources and verifiable facts. Wikenigma inverts this: the absence of an answer is the content.
The mention by Annie Rauwerda, who is widely followed for her curation of Wikipedia oddities, helped introduce Wikenigma to a new audience. Rauwerda’s promotion of the site in her “Depths of Wikipedia” project brought in users already fascinated by the strange and unexplained.
Gardiner’s background with Improbable Research influenced the site’s tone and content, favoring odd and overlooked questions. Improbable Research is best known for the Ig Nobel Prize, awarded annually to scientists whose research makes people laugh and then think.
Wikenigma has become a resource for journalists, educators, and curious readers. Its entries are cited by outlets like Slate, Big Think, and Boing Boing as examples of how the internet can be used to document not just what we know, but what we don’t.
The site is notable for its strict editorial line. Entries that cannot, in principle, be falsified or tested are rejected. This keeps the project grounded in the scientific method, even as it catalogs the unknown.
Wikenigma’s entry count as of May 2026 — 1,280 — is a tangible measure of the scale of scientific ignorance still facing humanity. The number has grown steadily, averaging over 100 new entries per year since 2016.
Wikenigma’s ban on for-profit AI scraping is explicitly written into its license. This is a direct response to growing concerns about the commercial exploitation of community knowledge bases for training proprietary AI systems.
The site’s minimalist technical infrastructure — DokuWiki, no database, run largely by a single curator — stands in contrast to the massive, crowd-driven engines powering more famous wikis.
Wikenigma’s existence is a sign that curiosity about the unknown is alive and well online. The site’s entries highlight how much there is still to discover, and how many fundamental questions remain unanswered.
One of the most surprising details: Only a handful of mysteries on Wikenigma’s list have been resolved since 2016. The beeswax wreck mystery, solved by an accidental find, is one of the rare exceptions. The rest — from why we blush to the origins of golf and the causes of the Mayan collapse — remain wide open, waiting for the next accidental discovery or breakthrough.