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Today I Learned, also known as TIL, is the fifth-biggest subreddit. It unites a whopping 30.9 million members, who all go there with a single goal in mind — to enrich each other's understanding of the world.

Sharing interesting facts about human psychology, animal behavior, food history, and pretty much everything else you can imagine, this online community is full of fascinating trivia that has been successfully evading many of us.

Continue scrolling to check out its recent posts, and for more, fire up our older publications on TIL here, here, and here.

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#1

29 Things About The World That People Didn’t Know Until Recently TIL that dogs intentionally try to make humans laugh. They understand that laughter means play, and play is positive.

PetLoverGuy1993 , seventyfourimages Report

Data1001
Community Member
1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

Also, I strongly feel that dogs can also sense our emotions. They can tell when we're having a bad day, enough to come over and comfort us.

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    #2

    29 Things About The World That People Didn’t Know Until Recently TIL Jonathan Goldsmith, AKA The Most Interesting Man in the World from the Dos Equis commercials, has been an advocate for landmine victim support, has assisted the effort to prevent and cure cancer in dogs, save the Siberian Tiger, and end child [intimacy] trafficking in Cambodia.

    meep_launcher , Toglenn Report

    #3

    29 Things About The World That People Didn’t Know Until Recently TIL The average life span of a pet cat has risen from seven years in the early 1980s to fifteen years as of 2021.

    User , viki2win Report

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    #4

    29 Things About The World That People Didn’t Know Until Recently TIL in 1915 a pharmacist saw his sister make her own mascara with coal and petroleum jelly and thought he could make a better product. His invention was easier to apply and won't burn a woman's eye. He named his new company Maybelline after his sister Maybel and the base material Vaseline.

    shaka_sulu , Maybelline Report

    Data1001
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    He also decided to ditch their original slogan: "Maybe she's burned with it. Maybe it's Maybelline!"

    #5

    TIL that elephant poaching has steadily decreased in certain African countries causing elephant populations to slowly begin rising.

    IanMazgelis Report

    Ralph Vanloton
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    Good! That indicates the Poacher Police have been effective!!

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    #6

    TIL that in The Shawshank Redemption, when Morgan Freeman’s character is asked “why do they call you Red?” and he responds with “maybe it’s because I’m Irish”. It’s because the character in the novel was a red haired Irish man. They cast Freeman for the part but added the line as a joke.

    lettuceandcucumber Report

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    #7

    TIL the Higgs-Boson Particle, aka "the God Particle", was actually called "the [darn] Particle" by physicists because it was so difficult to detect. Publishers forced the rename, resulting in a confusing tie to religion for the particle which is nearly universally hated by physicists.

    whozitsandwhatsits Report

    #8

    29 Things About The World That People Didn’t Know Until Recently TIL - The Middle Ages had retirement homes, where seniors could buy residence for the rest of their lives at a monastery with food, shelter and clothing included.

    fencerman , User Report

    #9

    TIL that the writers on Futurama created and proved a new mathematical theorem as a plot point for a body-switching episode.

    rarelyapropos Report

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    #10

    29 Things About The World That People Didn’t Know Until Recently TIL Japan has a 'wind phone'. An unconnected phone booth where grieving relatives go to 'talk' to their lost loved ones. Opened after the 2011 Fukushima earthquake/tsunami, it has seen over 30,000 visitors.

    Standard-Assist-5793 , Matthew Komatsu Report

    #11

    29 Things About The World That People Didn’t Know Until Recently TIL that domestic dogs have developed muscles in there brow to "mimic" humans.

    User , StudioVK Report

    Data1001
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    Speaking of mimicking humans, I love those videos where if their owner has a recent injury that makes them limp, often a dog will start walking like them. It's like, "What are you trying to accomplish there, you silly pooch?"

    #12

    TIL Crows are a highly intelligent species, which are self-aware just like humans. They are as smart as Gorillas and have a complex brain which has the ability to reason.

    DueDoughnut7842 Report

    Data1001
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    And they hold grudges and pass them down to their offspring. Never tick off a crow. But they also remember friendly people, so as annoying as they are to listen to, befriend a crow today. 😉

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    #13

    29 Things About The World That People Didn’t Know Until Recently TIL that in 1554 Elizabeth Crofts hid in a wall on Aldersgate Street, where she pretended to be a heavenly voice. Reputedly 17,000 people came to listen to her give out anti-Catholic propaganda.

    Kurma-the-Turtle , Ethan Doyle White Report

    #14

    29 Things About The World That People Didn’t Know Until Recently TIL mixed-breed dogs live an average of 14 years while purebreds live only an average of almost 10 years.

    Splashlight2 , Christopher_Boswell Report

    #15

    TIL that the world's largest rodent "Capybara" are so chill to the point that they can form an unlikely friendship with crocodiles.

    Lets_Earn26 Report

    #16

    29 Things About The World That People Didn’t Know Until Recently TIL Willie O'Ree, the first black man to play in the NHL, was blind in one eye. It was caused by a ricocheting puck that hit him in the face when he was 18 and he kept it a secret for his entire 21-year career.

    User , Eric Connolly Report

    #17

    TIL that New York City is reintroducing millions of oysters into their harbor to help clean the water and create marine habitats. They've been collecting used shells from local restaurants to create new homes for juvenile oysters.

    Rexton9 Report

    Ralph Vanloton
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    This project has been planned for several, received Federal funding and should yield excellent results due to being well thought-out.

    #18

    29 Things About The World That People Didn’t Know Until Recently TIL That in 1941, USS New York opened fire on an object, believing it to be a japanese aircraft. Fire commenced until a navigator realized they were shooting at Venus.

    daesereg , www.pacificwarmuseum.org Report

    #19

    29 Things About The World That People Didn’t Know Until Recently TIL when an American film has more than one writer, an "&" indicates that the screenwriters collaborated on the script. An "and" means they worked independently on separate drafts.

    griefofwant , Alex_star Report

    #20

    TIL a “ferocious rabbit” ran amok in Central Park in 1917. He terrorized the sheep in Sheep Meadow, maimed dogs, and fought an orangutan in the zoo.

    cy_ko8 Report

    #21

    TIL Wolfgang Mozart had a sister, Maria Anna, who was also an extremely talented child prodigy in music. Sadly, she was prevented from performing as an adult. Many of her compositions have been lost, including one Wolfgang wrote that he was in ‘awe’ of, contributing to her obscurity.

    madhatter103 Report

    #22

    TIL In 1941 The Germans allowed the British RAF to drop a prosthetic leg by parachute to a Luftwaffe base in France. The Germans were very respectful of Captain Douglas Bader, who was captured after bailing from his plane with only one of his two prosthetic legs. One got stuck in his damaged plane.

    aim179 Report

    #23

    29 Things About The World That People Didn’t Know Until Recently TIL about the thymus, a small (1 oz.) organ behind the sternum that trains new white blood cells to NOT attack the body's own cells. Only 2% survive this rigorous training program; the rest commit suicide to prevent themselves from attacking friendly cells.

    Iestwyn , en.wikipedia.org Report

    #24

    29 Things About The World That People Didn’t Know Until Recently TIL about hysterical strength, a display of extreme physical strength by humans, beyond what is believed to be normal. Examples include a woman saved several children by fighting a polar bear and a woman lifting a car high enough to save a person.

    Paesano19 , ivanmorenosl Report

    Hassel Davidhoff
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    I've always wondered if these are actual real phenomena. I have my doubts.

    #25

    TIL Founding Father and author of the Bill of Rights James Madison stopped the Virginia Assembly from establishing Christianity as the state religion with the help of Thomas Jefferson.

    User Report

    #26

    29 Things About The World That People Didn’t Know Until Recently TIL in the 1800’s bananas were seen as “immoral fruit” because of their shape. Fruit companies began issuing postcards of women eating bananas to advertise the fruit wasn’t taboo.

    User , Queensland State Archives Report

    Data1001
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    I should think that would just have made it even more immoral, lol.

    #27

    29 Things About The World That People Didn’t Know Until Recently TIL On PC/console games, about 60% of the female avatars you meet are played by a male player.

    28nov2022 , quanticfoundry.com Report

    Data1001
    Community Member
    1 month ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    It's been speculated that this is because males would much rather look at a female avatar, since they're often onscreen the entire time.

    #28

    29 Things About The World That People Didn’t Know Until Recently TIL about Third Man Syndrome. An unseen presence reported by mountain climbers and explorers during traumatic survival situations that talks to the victim, gives practical advise and encouragement.

    my__name__is , McKay Savage Report

    Ralph Vanloton
    Community Member
    1 month ago

    This comment has been deleted.

    #29

    29 Things About The World That People Didn’t Know Until Recently TIL that Sea Urchins are called Sea Urchins because Hedgehogs used to be called Urchins until about the 15th century. Sea Urchins are Ocean Hedgehogs.

    visiblecustomer2021 , www.quirkbooks.com Report