There's always something new you can learn. Something that can broaden your horizons. You just have to know where to look.
One of the places that offer a never-ending flow of knowledge is the subreddit 'Today I Learned' (or TIL for short). People go there to share all the interesting stuff they discover, and the fact that its members are the ones who produce its content is what makes TIL such an enjoyable encyclopedia. It's legit. It's unpredictable. And it's constantly getting new submissions. What more could one ask for?
#1

TIL Judith Love Cohen, who helped create the Abort-Guidance System which rescued the Apollo 13 astronauts, went to work on the day she was in labor. She took a printout of a problem she was working on to the hospital. She called her boss and said she finished the problem and gave birth to Jack Black
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580points
#2

TIL about the Great Green Wall, an effort to plant trees to stop desertification in the Sahara that began in 2007. Ethiopia has planted over 5.5 billion seedling since
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500points
#3

TIL Hours after being adopted from an animal shelter, 21-pound cat Pudding saved her owners life. While suffering a diabetic seizure, Amy Jung's newly acquired cat pounced his weight on her chest and began swatting her face and biting her nose until she gained consciousness.
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464points
#4

TIL that ravens and wolves have formed a mutually beneficial relationship out in the wild. Ravens have been observed calling wolves to the site of dead animals so that the wolves will then open up the carcass and leave the scraps for the ravens once they're finished.
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415points
#5

TIL that in 1995, a man received a "check" for $95,000 as junk mail. Jokingly, he deposited it into his account. The "check" met all of the legal criteria for a check and was cashed
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395points
#6

TIL of Elouise Cobell (“Yellow Bird Woman”) who founded the first Native American owned bank. As treasurer of the Blackfeet Nation she tried to resolve accounting discrepancies regarding leases on Indian Land which led to a $3.4 Billion dollar class action settlement against the US government.
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371points
#7

TIL NASA's longest serving female employee since January 1958, Sue Finley, has been an engineer and programmer for space missions since Explorer 1, for missions to the Moon, Sun, all the planets and many other solar system bodies, and recipient of NASA's Exceptional Public Service Medal.
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362points
#8

TIL the King's doctor Johann Struensee seized power for over a year in 18th century Denmark. He managed to abolish slavery, abolish censorship of the press, and have an affair with the Queen before being ousted and executed in 1772
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357points
#9

TIL that the worlds rarest tree, Kaikōmako native to New Zealand, has been rescued from extinction after 40 years of trying to get the very last female tree in the world to fruit again
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344points
#10

TIL Richard Simmons would wake up at 4AM to call up to 40 people who are isolated, alone, or needed empathy. Some credited Richard Simmons for saving their lives
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333points
#11

TIL Friends Thomas Cook and Joseph Feeney shook hands in 1992, swearing if either one won the Powerball jackpot, they would split the winnings. Well the power of friendship and a handshake has paid off: 28 years later Tom won €22 million and split the winnings with his friend
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329points
#12

TIL About a 17 year old kid that was given an old iPhone for free, and using the "barter" section of Craigslist made 14 trades, ending with a Porsche. Along the way he traded for newer phones, computers, motorcycles, and eventually cars.
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325points
#13

TIL that Walter Breuning stopped smoking cigars at age 103 because they became too expensive. At age 108, he began smoking cigars again after receiving a lot of gifts of cigars. He ultimately ended up living to age 114.5 and was the second-last verified surviving man born in the 1800s
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324points
#14

TIL in 1998, a 10-year-old girl in Austria was dragged into a car and kidnapped. The case remained unsolved until she knocked on someone's door in 2006 saying: "I am Natascha Kampusch." She had just escaped the secret cellar of a local technician that abused her for 8 years
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317points
#15

TIL that in the 70s, Fort Lauderdale, Florida, tried creating its own artificial coral reef by dumping some 2 million used tires into the ocean. It became an environmental disaster, naturally, but also a military training exercise when divers had to retrieve the tires (almost one by one).
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314points
#16

TIL over 8,000 pieces of music were secretly created in Nazi concentration camps; including symphonies, operas, and songs scribbled on everything from food wrappings to potato sacks. One prisoner composed an entire symphony on toilet paper using the charcoal given to him as dysentery medicine
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309points
#17

TIL about Terry Fox, a Canadian athlete with a leg that was amputated due to cancer. He ran across Canada for about 143 days and ran about 5373 kilometers(3339 miles) in order to raise both money and awareness for cancer
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304points
#18

TIL a new kind of artificial cornea successfully restored sight in a 78-year-old man. The surgery uses a lens which can more easily replace damaged tissue in a simpler surgery. Immediately after the surgery, the patient was able to recognize family members and read numbers on an eye chart.
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290points
#19

TIL that, in 2014, scientists found a giant 30,000 year old virus in Siberian permafrost. The virus, Pithovirus sibericum, was still infectious and began killing amoebas. This raised concerns that melting or drilling arctic ice could unearth previously undiscovered pathogenic viruses
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286points
#20

TIL Police in Finland believe they have caught a car thief with the help of a dead mosquito they noticed inside an abandoned vehicle. Police saw that the mosquito had recently sucked blood and decided to send the insect for analysis, and the DNA matched the man on the Police Register.
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284points


