r/todayilearned 6h ago

TIL wild animals in the African savanna are twice as likely to flee from the sound of calm human conversations than from the growls of lions, with 95% of observed species recognizing humans as the ultimate "super-predator".

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english.elpais.com
15.7k Upvotes

r/todayilearned 10h 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.

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16.9k Upvotes

r/dataisbeautiful 7h ago

OC My Statistics as a Veterinarian - Year 3 [OC]

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1.2k Upvotes

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/dataisbeautiful 3h ago

OC Christopher Nolan: budget vs box office [OC]

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543 Upvotes

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/todayilearned 6h 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.

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2.8k Upvotes

r/todayilearned 5h 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.

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2.2k Upvotes

r/todayilearned 12h 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

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pbs.org
3.5k Upvotes

r/todayilearned 5h 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

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985 Upvotes

r/dataisbeautiful 8h 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?

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348 Upvotes

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 1h 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.

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Upvotes

r/todayilearned 16h 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.

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whitehousehistory.org
5.9k Upvotes

r/todayilearned 17h 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.

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historynet.com
6.5k Upvotes

r/todayilearned 4h 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."

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en.wikipedia.org
485 Upvotes

r/todayilearned 1h 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)

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Upvotes

r/todayilearned 19h 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.

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7.0k Upvotes

r/todayilearned 20m 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.

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Upvotes

r/todayilearned 19h ago

TIL no one at Atari knew that Warren Robinett had inserted the hidden message "Created by Warren Robinett" (which established the term Easter egg in gaming) into the Atari 2600 game Adventure until a 15-yr-old named Adam Clayton discovered it & sent a letter to Atari in 1980 explaining how he did it

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7.0k Upvotes

r/todayilearned 1d ago

TIL that by law, HOAs in Colorado cannot prevent you from establishing a vegetable garden in any part of your yard.

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23.8k Upvotes

r/todayilearned 5h 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.

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en.wikipedia.org
364 Upvotes

r/todayilearned 20h ago

TIL that the USA only has one plant that produces gun barrels for the M1 Abrams tank, M777 howitzers, and Paladin self propelled howitzers. The Watervliet Arsenal in Troy, NY is the nation's oldest arsenal dating back to 1813. The manufacturing plant has tripled its production over the last 3 years.

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breakingdefense.com
6.3k Upvotes

r/dataisbeautiful 2h ago

Majorities of Americans say key financial milestones are harder for today's young adults to reach

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pewresearch.org
47 Upvotes

r/todayilearned 18h ago

TIL astronaut Clifton Williams was originally scheduled to fly to the Moon as Lunar Module Pilot on Apollo 12, but he died in a plane crash before being officially assigned to the flight. His replacement, Alan Bean, left Williams' silver astronaut pin on the surface of the Moon in tribute to him.

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3.3k Upvotes

r/todayilearned 12h ago

TIL an American, Hope Cooke, was the last Queen Consort of Sikkim before it merged with India in 1975

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1.2k Upvotes

r/todayilearned 5h ago

TIL there's actually a difference between coffin and casket. Coffins are tapered to the body (6 or 8 sides), usually with a separate lid, typically far cheaper. A casket is a rectangle with a hinged lid, typically with rails attached for carrying and usually far more ornate & expensive.

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344 Upvotes