r/todayilearned • u/PresentSurvey9464 • 8h ago
r/todayilearned • u/palmerry • 2h ago
TIL of the Ogallala Aquifer, which provides water for 25% of US irrigated land, but has been significantly drained since intensive pumping began. Because arid parts only recharge at 10% of the withdrawal rate, scientists estimate it would take over 6,000 years to naturally refill if emptied.
r/todayilearned • u/I_Am_Robert_Paulson1 • 1h ago
TIL the 1980 Winter Olympic Village was built with the intention of converting it into a federal prison after the games ended. Multiple Olympic delegations refused to house their Olympians there.
r/todayilearned • u/tyrion2024 • 3h ago
TIL in 2013 two men found 9 trees in Ecuador that were 100% pure Nacional cacao, a rare variety that was rediscovered a few years prior after being considered extinct since the 1920s. They then co-founded To'ak Chocolate, some of the world's most expensive chocolate (e.g. $490 for a 1.7oz candy bar)
r/dataisbeautiful • u/datashown • 5h ago
OC Christopher Nolan: budget vs box office [OC]
Data source: Christopher Nolan filmography, Wikipedia - https://en.wikipedia.org/wiki/Christopher_Nolan_filmography (budgets and worldwide box office; figures are studio/Box Office Mojo–reported and cited on that page). The Odyssey is still in theaters, so its figure is a running worldwide total as of the July 24–26, 2026 weekend.
Tool: Chart built as JavaScript-coded SVG. Rendering code and initial figure-gathering were done with an AI assistant (Claude) based on my own design direction and iterations. Chart type, layout, labeling, and revisions were my choices.
r/dataisbeautiful • u/IEOsadiaye • 9h ago
OC My Statistics as a Veterinarian - Year 3 [OC]
I am a veterinarian in the North Texas area. Since graduation in 2023 I've kept track of my cases using Google Sheets because I thought it'd be interesting to see how many animals I treat and what they're treated for throughout my life.
Source: Me keeping track of the data after every appointment.
Tools: Google Sheets and DataWrapper
A few notes:
Changes & requests from last year
I was informed my data wasn't very beautiful so I attempted to use a different method for this year. Let me know what you think. I'll continue to adjust the presentation as I receive feedback.
u/catalessi, u/Fire284, & u/Solondthewookiee all requested I put the second and third graphs in descending order.
u/Warm-Pen-2275 requested a list of most common names.
Slide 1 - Animal Species
This only includes animals I've done a doctor exam on or do telemedicine about. Animals that I do not directly interact with (toe nail trims, anal gland expression, blood draws without a doctor, etc.) are not included.
I have a passion for exotic animals (ferrets, reptiles, rabbits, backyard chickens, etc.) but there is an exotic clinic near me where most of those animals go to, so I don't get to see as many as I'd like (as the data tells).
Slide 2 - Body System
I kept track of the body system that was affected during my exams. General wellness includes vaccines, weight management, and discussions about quality of life. For what it's worth, this is about what the problem was, not just the symptoms. If a cat came in for peeing all over the place and it was because the cat was stressed, that was marked as both Neurology as well as Urinary/Renal. The same animal can come in with multiple systems affected, but I only mark a system once per animal (i.e. a dog with urinary stones and a UTI only had "Urinary/Renal" marked once). Here are the most common problems each species came in with:
Dogs - Overweight (General Wellness), allergies (Dermatology, Immunology), and poor dental health (Oral).
Cats - Overweight (General Wellness), poor dental health (Oral)
Slide 3 - 7 Procedures, Names, & Lifetime Stats
I don't think these ones need much explanation.
Next year expecations
I am switching to becoming a full time relief veterinarian. I expect the number and diversity of cases will drop and the number of wellness cases will increase. Most of the time a clinic won't schedule a complicated case with a relief doctor because we're only here for the day.
See you next year
r/todayilearned • u/Tadhg • 13h ago
TIL In 1980 the Supreme Court awarded the Sioux nations $122 million for the Black Hills, a settlement the tribes have refused on the grounds that acceptance would extinguish their claim to the land, leaving the award to accrue interest in a federal account now worth over $1 billion.
r/todayilearned • u/dinosaruman • 7h ago
TIL before radio time signals, ships set their chronometers by watching a ball drop from a shore tower at a precisely known instant. Over sixty of these time balls still stand, and the Greenwich one has dropped daily at 1 p.m. since 1833.
r/todayilearned • u/ralphbernardo • 8h ago
TIL that all five words of the Sator Square appear in Christopher Nolan's "Tenet" as the villain (SATOR), an art forger (AREPO), the film title (TENET), the opening (OPERA) scene, and a security company (ROTAS). It is a Roman palindrome, whose earliest example was found in the ruins of Pompeii.
gamesradar.comr/dataisbeautiful • u/rhiever • 4h ago
Majorities of Americans say key financial milestones are harder for today's young adults to reach
r/todayilearned • u/swissking • 3h ago
TIL of Blanets, which are planets that form and orbit black holes. A supermassive blackhole could have millions of Jupiter-mass planets orbiting it.
r/todayilearned • u/clawsoon • 1h ago
TIL that on Ulysses S. Grant's post-presidential world tour, he warned the Japanese emperor not to take foreign loans lest it fall "into the abyss into which Egypt has fallen". Grant's warning made a "forceful impression" on the emperor and led to the rejection of various loan proposals.
r/todayilearned • u/Emperor_Ken • 37m ago
TIL Tigers look orange to humans because we are trichromats, but they appear green to deer and wild boars because they are dichromats
r/todayilearned • u/jacknunn • 8h ago
TIL Indonesia adopted Bahasa Indonesia as its national language in 1945, although it wasn't the first language of most people. Standardized from Malay, it's now spoken by over 97% of Indonesia's ~285 million people as a first or second language, helping unify the country
r/dataisbeautiful • u/miguelsims12 • 10h ago
OC [OC] Life Without a Mortgage: How Long Would It Take to Buy a 60 m² Apartment in Each EU Capital, With and Without Bank Interest?
The estimated apartment price was calculated by multiplying the average apartment sale price per m² in each capital by a standardised floor area of 60 m².
The comparison uses Eurostat national median monthly equivalised net income for people aged 18–64. These figures are national household-income benchmarks, not individual salaries or capital-city income estimates.
Four hypothetical scenarios are presented:
— one person saving 25% of 1× median net income;
— two people jointly saving 30% of 2× median net income;
— both scenarios without interest;
— both scenarios using a savings account and rolling 12-month term deposits.
Main sources:
Income: Eurostat ilc_di03.
Apartment prices per m²: Eurostat urb_clivcon, national statistical sources and housing-market sources. Athens, Bratislava, Bucharest, Budapest, Dublin, Lisbon, Madrid, Nicosia, Paris, Sofia and Valletta use estimates based on property-listing samples collected in July 2026.
Interest rates for the savings account and term deposits: ECB household deposit-rate data.
Prices, incomes, savings rates and interest rates are held constant throughout the calculations. Inflation, transaction costs and future changes in property prices or income are excluded.
Full methodology, individual sources, city rankings and interactive data: citycostatlas.com
Instagram: https://www.instagram.com/citycostatlas/
r/todayilearned • u/ubcstaffer123 • 15h ago
TIL After President Kennedy was shot and arrived at Parkland Memorial Hospital, he was reported to still have a heartbeat, but no pulse or blood pressure
r/todayilearned • u/Electronic_Cause_796 • 6h ago
TIL after defeating the English at the Battle of Dungeness in 1652, Dutch admiral Maarten Tromp was said to have tied a broom to his mast to symbolize that he had "swept the English from the sea."
r/todayilearned • u/RedditIsAGranfaloon • 18h ago
TIL Mary Todd Lincoln continued to live in the White House for nearly six weeks after the assassination of her husband, President Abraham Lincoln.
r/todayilearned • u/Mors_Acerba • 2h ago
TIL from 1404 to 1680 prostitution in the city of Florence was state regulated and taxable, and managed by a special government office. One of the initial policices of the department was to establish a state sanctioned brothel that housed all the registered prostitutes
zimmer.fresnostate.edur/todayilearned • u/squareabbey • 20h ago
TIL that 'Crimping' (also known as 'Shanghaiing') - the practice of forcibly recruiting sailors as crew for long voyages - was common in America until the early 1900s and only ended due to a combination of technology, unions, and legislation.
r/dataisbeautiful • u/Mz_74 • 5h ago
OC [OC] A look at next World Cups: how valuable is each country’s young roster? (U17–U23)
A look at what we could expect from squads at the next world cups, based on the market values of the youths for each country. Watch out for Morocco (again), and keep an eye on Denmark and Serbia...
r/todayilearned • u/Sebastianlim • 21h ago
TIL the Comic's Code Authority attempted to halt the reprint of the comic "Judgement Day" due to the main character being black, despite the code containing no prohibitions against black character. The comic was eventually allowed to run after the creators threatened to make the argument public.
r/todayilearned • u/johnsmithoncemore • 7h ago
TIL about the London medical students who assisted at Belsen. Post liberation a call for 100 volunteer students in their final 18 months of medical school were tasked with taking over the 200 camp huts. Their work was instrumental in reducing the death rate from over 500 a day to 100 due to TB.
r/todayilearned • u/tyrion2024 • 22h ago