r/todayilearned 10h ago Wholesome LOVE!

TIL Candido Jacuzzi invented the Jacuzzi to help his son's Juvenile Rheumatoid Arthritis. His son contracted arthritis after strep throat, which caused continuous joint pain. He created the J-300 portable water pump for a bath at their house since the boy benefited from hydrotherapy.

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27.7k Upvotes

r/todayilearned 16h ago

TIL the energy released by turning just one kilogram of hydrogen into helium is the same as burning 20,000 metric tons of coal. The sun is doing this constantly through nuclear fusion.

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13.9k Upvotes

r/todayilearned 15h ago

TIL After Neil Armstrong's death, his sons put hundreds of items they inherited from their parents on auction, pulling in $14.69 million. Neil Armstrong owned pieces of fabric from Wright Flyer, and Apollo 11 gold medal that sold for $2.04 million

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7.7k Upvotes

r/todayilearned 19h ago

TIL in 2007 a Tombstone with the inscription "you will always be remembered, never forgotten", was left behind by a passenger at Dublin airport, subsequently ending up in lost property.

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21.4k Upvotes

r/todayilearned 6h ago

TIL When Mozart stopped by Linz on his way back to Vienna, he found out the local count wanted him to contribute a symphony for an upcoming concert. Mozart was not expecting it and had no music with him, so he ended up having to write a symphony in merely 4 days.

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694 Upvotes

r/todayilearned 15h ago

TIL During Julius Caesar's siege of a Gallic fort, the Romans dug tunnels under the spring that served as the fort's water supply. The defenders, believing that the spring drying up was a sign from the gods, surrendered. Caesar spared their lives, but had their hands cut off.

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3.3k Upvotes

r/todayilearned 17h ago

TIL the convention of naming a dog "Fido" was popularized by Abraham Lincoln. "Fido" means "faithful" and it's use as a dog's name dates back to the ancient Romans.

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2.6k Upvotes

r/todayilearned 10h ago

TIL beetles constitute almost 40% of described insects and 25% of all known animal life-forms

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519 Upvotes

r/todayilearned 2h ago

TIL Joseph Armand Bombardier invented the snowmobile after his son died of appendicitis when a blizzard prevented him from getting him to a hospital in time.

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112 Upvotes

r/todayilearned 15h ago

TIL Kids used to come up to Theodor Seuss Geisel's door saying that they want to meet Dr. Seuss. They didn't believe it when Geisel said "I'm Dr. Seuss", staring until his wife gave them cookies. Geisel had a fear of audiences, often declining requests to appear in public

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1.0k Upvotes

r/todayilearned 6h ago

TIL During WWII the US navy kept two aircraft carriers positioned in the Great Lakes

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156 Upvotes

r/todayilearned 14h ago

TIL: The Lorem Ipsum Dolor placeholder text is from an ancient Roman manuscript by Cicero, and has been used since the 1500s for this purpose

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646 Upvotes

r/todayilearned 17h ago

TIL during the monsoon season, the Mekong River swells so much it forces the Tonle Sap River to flow backwards, away from the sea, filling Tonle Sap Lake, temporarily making it the largest freshwater lake in SE Asia. It’s the only river in the world that changes direction seasonally.

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871 Upvotes

r/todayilearned 8h ago

TIL of the Bagaudae, a collection of former slaves, deserters and peasants who fought the Roman Empire from the end of the 3rd century until its callapse.

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151 Upvotes

r/todayilearned 14h ago

TIL Spanish conquistadors went exploring all the way up to Kansas in the 1500s

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458 Upvotes

r/todayilearned 14h ago

TIL Polish craftsmen arrived in colonial America before the Pilgrims did

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355 Upvotes

r/todayilearned 2h ago

TIL it is illegal to keep a rabbit as a pet in certain parts of Australia. Exceptions can be made for public exhibitions, such as magic acts

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45 Upvotes

r/todayilearned 1d ago Silver Helpful Wholesome

TIL to collect taxes, Christian IV of Denmark asked captains of ships crossing the Øresund to estimate the value of their cargo, which was applied as the tax base without further audit. But the king also claimed the right to buy the entire cargo at exactly that price.

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79.8k Upvotes

r/todayilearned 11h ago

TIL human DNA contains roughly 750Mb of information.

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201 Upvotes

r/todayilearned 4h ago

TIL squeezing your animals can help them relax, works for cows!

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53 Upvotes

r/todayilearned 23h ago

TIL Australia has 2 active volcanoes on Heard & McDonald Islands, one of the remotest places on earth. It is very cold, mostly barren, erupts frequently and has many wrecks around it. It has 71 species of fungi and was recently involved in legal proceedings between two entities (Australia & the UK).

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1.6k Upvotes

r/todayilearned 8h ago

TIL Most Funko Pop! figures are not bobbleheads, but all Star Wars figures in the line are bobbleheads to avoid licensing conflicts with Hasbro, the company holds the license to make ordinary (non-bobblehead) figures of characters from these franchises.

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91 Upvotes

r/todayilearned 15h ago

TIL Dr. James Parkinson, whose study of 'The Shaking Palsy' resulted in it being named after him, narrowly avoided being dispatched to Australia in irons after being accused of plotting to shoot King George III with a poisoned dart

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218 Upvotes

r/todayilearned 15h ago

TIL there is US Military Cemetery in Tunisia, North Africa that is 27 Acres in size with 2,841 American graves. It was dedicated in 1960.

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175 Upvotes

r/todayilearned 12h ago

TIL that in 1830, the Conic Sections Rebellion, Yale students protested having to draw diagrams on their final exams.

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89 Upvotes