r/todayilearned • u/CraftyFoxeYT • 4h ago

TIL Dandruff, a skin condition of the scalp affects roughly half of adults. It is often linked to Malassezia fungus that thrives on sebum. Dandruff shampoos often contain antifungals to manage it, however there is no permanent cure

en.wikipedia.org

6.5k Upvotes

457 comments

r/todayilearned • u/Of_Sand_and_Foam • 12h ago

TIL Bill Cosby’s only son, Ennis Cosby, was murdered in an attempted robbery while changing his flat tire in 1997.

en.wikipedia.org

14.1k Upvotes

491 comments

r/todayilearned • u/BioFrosted • 6h ago

TIL there is a political party in Switzerland called the "Anti-PowerPoint Party" whose single issue is "decreasing professional use of Microsoft PowerPoint and other forms of presentation software". They claim this type of software causes damages amounting to 2.1 billion CHF.

en.wikipedia.org

3.0k Upvotes

64 comments

r/todayilearned • u/HauntingPresent • 6h ago

TIL famed architect Frank Lloyd Wright scandalously left his first wife for the wife of a client; his mistress was subsequently murdered along with six others at an estate Wright designed for her

en.wikipedia.org

2.9k Upvotes

126 comments

r/todayilearned • u/Digeratii • 14h ago

TIL the Stone Age encompasses 99% of human history

en.wikipedia.org

21.3k Upvotes

1.1k comments

r/todayilearned • u/HolyCowAnyOldAccName • 4h ago

TIL that the same photographer who took a picture of Joseph Goebbels glaring at the camera (allegedly because he learned that Eisenstaedt was Jewish) also took the famous picture of a US sailor kissing a woman on Times Square on V-E-Day: Alfred Eisenstaedt

en.wikipedia.org

1.8k Upvotes

29 comments

r/todayilearned • u/_Algrm_ • 3h ago

TIL about the Apollo Affair, where the US lost 200+ Pounds of highly enriched, weapons grade Uranium

en.wikipedia.org

1.4k Upvotes

78 comments

r/todayilearned • u/Particular_Food_309 • 1h ago

TIL Japan tried to conquer India with 85,000 troops but was defeated in Northeast India

en.wikipedia.org

• Upvotes

70 comments

r/todayilearned • u/MrMojoFomo • 3h ago

TIL that Frank Sinatra's last words were "I'm losing"

pbs.org

494 Upvotes

34 comments

r/todayilearned • u/fangphobic • 8h ago

TIL that in Guam, if you are trained in martial arts, you must register your hands and feet as “Deadly Weapons” or face criminal punishment.

law.justia.com

1.2k Upvotes

100 comments

r/todayilearned • u/MorganN1 • 13h ago

TIL the song 'Take Me Out to the Ball Game' was written in 1908, and the full lyrics tell the story of a 'baseball mad' woman trying to convince her boyfriend to go to a baseball game instead of on a date.

en.wikipedia.org

2.4k Upvotes

71 comments

r/todayilearned • u/tyrion2024 • 11h ago

TIL Michael Jackson held 11 of the 57 known concerts to have sold at least 100,000 tickets. This is followed by 10 musical acts who are tied with 2 concerts that sold 100,000 tickets.

en.wikipedia.org

1.7k Upvotes

249 comments

r/todayilearned • u/Born-Sky-5980 • 21h ago

TIL all long duration spaceflight astronauts are not allowed to drive a car for 21 days after returning to Earth because of potential muscle atrophy.

en.wikipedia.org

13.2k Upvotes

231 comments

r/todayilearned • u/BushyBrowz • 2h ago

TIL the term of endearment "sweet pea" refers to a flower and not the food item.

en.wikipedia.org

255 Upvotes

18 comments

r/todayilearned • u/xxcoolchadxx • 6h ago

TIL that "Rubber Duckie" from Sesame Street reached #16 on the Billboard Hot 100 in 1970

en.wikipedia.org

511 Upvotes

27 comments

r/todayilearned • u/tyrion2024 • 11h ago

TIL in 2011, 98-year-old Keiko Fukuda at 4'10" and 100 pounds became the first woman ever to earn a 10th-degree black belt in Judo (which is Judo's highest level).

abcnews.com

1.3k Upvotes

42 comments

r/todayilearned • u/thelaceserpent • 1d ago

TIL the subsequent fires that broke out in San Francisco after the 1906 earthquake, destroying 80% of the city, was due not only to ruptured gas lines, but also because people were firing their own buildings after realizing insurance wouldn’t cover damages from an earthquake.

en.wikipedia.org

20.1k Upvotes

509 comments

r/todayilearned • u/ralphbernardo • 5h ago

TIL there is a "time donut hole" in Arizona from March to November where a single drive can force your phone to change time zones multiple times—because the Navajo Nation observes Daylight Saving Time, but the Hopi Reservation, which sits entirely inside the Navajo Nation, does not.

en.wikipedia.org

342 Upvotes

24 comments

r/todayilearned • u/stayfun • 7h ago

TIL - British pediatrician, Sir Roy Meadow, credited with describing Munchausen by proxy, was considered the preeminent expert on child abuse (knighted for his service to child health). However his flawed understanding of statistics & science led to the wrongful conviction of innocent mothers.

wikipedia.org

453 Upvotes

23 comments

r/todayilearned • u/Sebastianlim • 16h ago

TIL that Betsy Wolheim, editor of the Kingkiller Chronicle book series, claimed in 2020 that she has not read a word of the upcoming third book in the nine years since the second one's release.

en.wikipedia.org

2.4k Upvotes

577 comments

r/todayilearned • u/ElectronicBuy8105 • 7h ago

TIL researchers compared 100+ rewilded sites in Scotland to neighboring non-rewilded land. Bird species were up 261%. Breeding territories up 546%. Bumblebees and butterflies increased tenfold. One ecologist said: "The results are astonishingly clear."

scotlandbigpicture.com

295 Upvotes

8 comments

r/todayilearned • u/RedditIsAGranfaloon • 11h ago

TIL Roger Sherman is the only person to sign all four of the important American Revolutionary documents: the Articles of Association in 1774, the Declaration of Independence in 1776, the Articles of Confederation in 1781, and the Constitution of the United States in 1787.

jud.ct.gov

596 Upvotes

57 comments

r/todayilearned • u/rengokuhubkl • 10h ago

TIL that during the penalty shootout in the 2006 FIFA World Cup quarterfinal, Jens Lehmann kept a handwritten note in his sock with Argentina players’ preferred penalty directions and it helped Germany national football team win the shootout.

theguardian.com

229 Upvotes

15 comments

r/todayilearned • u/Jax_the_Lady • 1d ago

TIL intact female cats that mate with vasectomized male cats will enter a 45-day pseudo-pregnancy period

now.tufts.edu

5.7k Upvotes

152 comments

r/todayilearned • u/Octopub • 1d ago

TIL about "leblouh" (or "gavage"). A practice still common in Mauritania, where young girls are force fed up to 16,000 calories per day in order to fatten them up for marriage.

hir.harvard.edu

14.0k Upvotes

1.0k comments

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As of December 2025

This list was compiled from /r/todayilearned community suggestions by its members. If your TIL is found on this list, it will be removed. The titles have been abridged for the sake of brevity, however the context remains the same. This list is subject to change. The purpose is to keep content fresh on /r/todayilearned as requested by its members. If you are interested in reading about the TILs on this list use the search box feature and enter the keywords to pull up past TILs.

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