Today I Learned 🎓

25 September 2025 19:49

TIL people with red hair may need up to 20% more anesthesia. This is because of MCR1 mutation. [Source]

Today I Learned 🎓

25 September 2025 18:49

TIL in the Philippines the presidential and vice presidential elections are separate, so the winners may end up to be from opposing parties [Source]

Today I Learned 🎓

25 September 2025 16:49

TIL about Recursive Acronyms, which are acronyms that include the acronym within the meaning of the acronym. Noteable examples include GNU which stands for "GNU's Not Unix" [Source]

Today I Learned 🎓

25 September 2025 15:49

TIL The first president of the South American country Guyana was Arthur Chung, the first ethnically Chinese head of state of a non Asian country [Source]

Today I Learned 🎓

25 September 2025 11:49

TIL in the late 1600s, a painter in Florence supposedly invented “invisible paint” and offered to repaint the city for free. The city council declined, fearing “total invisibility” would cause mass panic. [Source]

Today I Learned 🎓

25 September 2025 09:49

TIL the first ever European settlement in the mainland Americas is the little-known town of Santa María la Antigua del Darién. [Source]

Today I Learned 🎓

25 September 2025 08:49

TIL that 19th-century doctors fabricated “bicycle face” to discourage women from cycling [Source]

Today I Learned 🎓

25 September 2025 05:49

TIL that Saturn's rings are incredibly thin. At their widest they are about 1 km thick, and at their thinnest about 10 meters thick. In width, they span from 7,000 km to 80,000 km away from Saturn's equator. [Source]

Today I Learned 🎓

25 September 2025 02:49

TIL that around 900,000 years ago humans nearly went extinct, with genetic evidence showing only about 1,280 individuals survived to repopulate the planet. [Source]

Today I Learned 🎓

24 September 2025 23:49

TIL the Romans had so many different gods that in later antiquity one theologian noted that there were at least three different gods just dealing with doorways, including a specific god for the door's hinge [Source]

Today I Learned 🎓

24 September 2025 22:49

TIL a mother visiting Pismo Beach was fined over $88,000 due to her kids collecting 72 clams after they mistook them for seashells. The incident had violated clamming regulations but she was able to get the county judge to reduce the fine to $500 after explaining the confusion. [Source]

Today I Learned 🎓

24 September 2025 20:49

TIL when a drunk zebrafish is introduced to a group of sober ones, the sober fish will follow the drunk individual as their leader [Source]

Today I Learned 🎓

24 September 2025 17:49

TIL René Laennec invented the stethoscope in 1816 because he thought it was improper to press his ear on a woman’s chest and found that a tube let him hear heart and lung sounds more clearly. [Source]

Today I Learned 🎓

24 September 2025 16:49

TIL in WWII, the US Army, with the approval of Walt Disney, had Mickey Mouse gas masks made for civilian children. [Source]

Today I Learned 🎓

24 September 2025 11:49

TIL that at 17 years old actress Michelle Williams entered a renowned futures trading contest and became the first woman to win. She is also the contest's 3rd highest-ranking winner of all time; the all-time highest ranking is held by her own father, trader Larry Williams. [Source]

Today I Learned 🎓

25 September 2025 18:49

TIL that in the late 18th century some wealthy individuals would pay poor people (preferably younger) to extract their teeth and have it transplanted into an empty socket. Results were usually unsuccessful. [Source]

Today I Learned 🎓

25 September 2025 17:49

TIL Dwarf sperm whales are about 9 feet long and can release a huge cloud of red "ink" to evade predators [Source]

Today I Learned 🎓

25 September 2025 16:49

TIL "the first unambiguous evidence" of an animal other than humans making plans in one mental state for a future mental state occurred in 1997 when a chimpanzee was observed (over 50x) calmly gathering stones into caches of 3-8 each in order to later throw at zoo visitors while in an agitated state [Source]

Today I Learned 🎓

25 September 2025 13:49

TIL In 1st century China there were two rebellions were led by a peasant faction called the "Red Eyebrows". They painted their eyebrows red so they could easily tell which soldiers were on their side during a battle. [Source]

Today I Learned 🎓

25 September 2025 10:49

TIL scientists can store digital data in DNA, fitting the equivalent of millions of gigabytes into just a few grams of biological material. [Source]

Today I Learned 🎓

25 September 2025 09:49

TIL in 2015, actor Terrence Howard formulated his own theory called 'Terryology' which he claimed proves 1x1=2. He also claims he can kill gravity, remembers the event on the day he was born and does not believe in the number 0 [Source]

Today I Learned 🎓

25 September 2025 06:49

TIL that Henry Strong ran a successful buggy whip business. He met George Eastman and co founded and funded what would become Eastman Kodak. [Source]

Today I Learned 🎓

25 September 2025 04:49

TIL since 1924, there have been only three players in the NFL named Napoleon. All three of them played for the Raiders between 1986 and 2004. [Source]

Today I Learned 🎓

25 September 2025 02:49

Today I learned that the United States not only had denominations of $500, $1000, $5,000, and $10,000, which are still legal for people to own, but for a very brief period they also had a $100,000 bill that was only ever used by banks and is considered illegal for private citizens to own. [Source]

Today I Learned 🎓

24 September 2025 22:49

TIL a Police officer was killed by rooster's blade during cockfight raid in the Philippines [Source]

Today I Learned 🎓

24 September 2025 21:49

Today I learned about phantom traffic jams (sudden slowdowns with no visible cause). They’re usually triggered by small human reactions, like one driver braking, which sets off a ripple effect as the cars behind overcorrect. [Source]

Today I Learned 🎓

24 September 2025 18:49

TIL New York is the only state in the US that allows avunculate marriage (uncle/aunt-niece/nephew marriage) [Source]

Today I Learned 🎓

24 September 2025 17:49

TIL: A woman was nearly stabbed to death by her abusive bf. At his trial, an ex testified for his character saying he was not a threat to women. She helped him get a shorter sentence. When he got out, they started dating and within a year he had stabbed her to death. [Source]

Today I Learned 🎓

24 September 2025 15:49

TIL there is a medieval monastery under construction according to the plans of early ninth-century Saint Gall, using techniques from that era. [Source]

Today I Learned 🎓

24 September 2025 07:49

TIL that Tupac Shakur was a ballet dancer growing up and played The Mouse King in a production of The Nutcracker [Source]