The Reddit Community That Has Taught 27 Million People Something New Today

Last updated: October 13, 2026

There is a corner of Reddit where people go specifically to feel smarter. It is called Today I Learned, commonly abbreviated as TIL. The subreddit has attracted a community of roughly 27.3 million members who spend their time uncovering strange, surprising, and occasionally absurd facts from history, science, and everyday life. It launched on December 28, 2008, and has been quietly feeding curiosity ever since.

The format is simple: someone posts a fact, other members upvote it if they learned something, and the cycle repeats millions of times over.

The short version

• The Today I Learned subreddit has approximately 27.3 million members
• It was created on December 28, 2008
• The community operates on a simple upvote system where members share interesting facts from history, science, and culture
• Popular posts often combine historical oddities with dark humor or unexpected connections
• The subreddit serves as a bottomless source of conversation starters for anyone who needs an interesting fact on demand

The kind of things you actually learn

The best TIL posts feel like discovering a cheat code to history. Some of the stranger ones from recent years include a fort built by the United States near the New York-Quebec border in 1818 that ended up on the Canadian side of the border after two years of construction. The Americans abandoned it and named it Fort Blunder.

Then there is the story of a church in Beatrice, Nebraska, that exploded in 1950 five minutes after choir practice started. No one was hurt because every single choir member was late for completely unrelated reasons. The church was empty.

A 1720 financial crisis in Britain apparently prompted parliament to debate a resolution to sew bankers into sacks filled with snakes and dump them into the Thames River. Whether it passed is unclear, but the fact that it was debated at all is remarkable enough.

Other posts hit closer to science. One explains that cheetahs went so close to extinction that their genetic diversity became dangerously low. Unrelated cheetahs can accept skin grafts from each other as if they were identical twins. Scientists have also highlighted that the Eurasian magpie demonstrates cognitive abilities far beyond most animals, and it is the only bird that has passed the classic mirror self-recognition test.

The human-interest layer

Not everything on TIL is about disasters or oddities. Some of the most popular posts reveal the more personal sides of famous figures. Darwin, for example, handed his old papers to his children for doodling. When you look at surviving drafts of the Origin of Species, you are seeing the work of his kids as much as his own. Stan Lee had a younger brother, Larry Lieber, who co-created Thor, Iron Man, and Ant-Man. Lieber retired from comic book art in 2018 at age 90.

And if you have ever complained about homework, consider the story of two 16-year-olds who got lost in the Canadian wilderness while snowboarding. They stayed warm by burning their homework. They were rescued the next day with only minor injuries. Sometimes the truth is funnier than anything you could make up.

Our analysis

TIL works because it rewards curiosity without demanding effort. You do not have to read an article or watch a video. A single sentence can rewire how you think about something. That is a low-friction way to feel informed.

For the site's audience, this kind of content is gold. One good fact can anchor a conversation for twenty minutes. It is the kind of currency that works in job interviews, first dates, and group chats where everyone is trying to sound interesting.

The dark humor angle also matters. Facts about snakes in sacks and exploding churches are not exactly wholesome, but they are entertaining. The subreddit is essentially a curated collection of "would you believe me if I told you" moments. That energy translates well to sharing.

The main risk with TIL is quality control. With millions of members posting, not every fact is accurate. The community does self-police to some extent, but readers should always take extraordinary claims with a grain of salt. The best accounts use TIL as a starting point, not a final source.

What this means for you

Say you are at a dinner party and the conversation hits a lull. You remember a TIL post you read about a bus driver in 1952 who accelerated across Tower Bridge in London just as it was starting to open. The double-decker bus cleared a six-foot drop, and the driver received a ten-pound bonus. That single fact can restart a conversation, spark a debate, or make you look like the most interesting person at the table.

You do not need to memorize everything. Just keep a few favorites in your back pocket for when the moment calls for it.

Bottom line

Today I Learned is one of Reddit's greatest assets: a community that turns curiosity into content and content into conversation. With 27 million members, it has become the internet's go-to source for the kind of facts that make you say "huh" out loud. Whether you are looking for dinner party ammunition or just want to feel slightly smarter during your next scroll, TIL delivers.

Key takeaways

• TIL offers low-effort, high-reward content that makes readers feel informed without requiring deep study
• The best facts combine historical oddity with conversational punch, making them perfect for social sharing
• One good fact can anchor a conversation, make you memorable, and entertain a group
• TIL facts work well as captions, chat messages, or icebreakers when you need something to say
• Always verify extraordinary claims, since the open posting format means some facts are more accurate than others