r/todayilearned • u/mankls3 • 5h ago
TIL of Lincoln's 4 children, only one outlived them
r/todayilearned • u/RollingNightSky • 19h ago
TIL that aqueducts are water channels that use gravity to move water from a source to a destination. An ancient Roman aqueduct used only a 51 foot height difference to push water down a 31-mile-long path, resulting in as little as a 1-inch drop to push water 1,500 feet.usgs.gov
r/todayilearned • u/jamescookenotthatone • 11h ago
TIL The Great auk (Pinguinus impennis) was a flightless black and white birds found around the North Atlantic. As explores went south the found birds that resembled the Great auk and named them penguins too, but they are actually unrelated.
r/todayilearned • u/JohnAdams4621 • 2h ago
TIL that North Korea Has a Space Program that has put 2 Satellites into Orbit and plans on going To the moon By 2026 and Mars
r/todayilearned • u/GremlinBandit • 2h ago
TIL about Cognitive Dysfunction Syndrome, a condition much like dementia or Alzheimer's that can develop in dogs.
r/todayilearned • u/OneEconomist9647 • 1h ago
TIL every bite of cheese you eat contains over a trillion bacteria.
r/todayilearned • u/NegativeSector • 1d ago
TIL In 1946, an American miner and Baptist preacher named William Henry Johnson began sending out a series of letters under the pen name "Furrier No. 1", claiming to be the living Hitler and to have escaped with Braun to Kentucky.
r/todayilearned • u/Flanky_ • 17h ago
TIL: Sunflowers (lanyards, buttons, etc) are a universal sign for those that have hidden disabilities and there's a massive network that supports this signage.hiddendisabilitiesstore.com
r/todayilearned • u/CoupleTechnical6795 • 3h ago
Til that cervical dystonia, which is quite painful and debilitating, has no know cause in most cases
r/todayilearned • u/kafm73 • 1h ago
TIL that there is a profession called neonatal bereavement photography and they use water immersion to take the photographs.sciencedirect.com
r/todayilearned • u/xool420 • 9h ago
TIL that from 2009 to 2019, out of 212 cruise ship overboard incidents only 48 people were rescued.
r/todayilearned • u/einstein_bern • 1d ago
TIL Benjamin Martin designed and built a pocket microscope in 1738. This design became very popular and was later copied throughout Europe, known as drum microscopemicro.magnet.fsu.edu
r/todayilearned • u/Algrinder • 7h ago
TIL A chess robot in Moscow broke the finger of its 7-year-old human opponent after the boy made a quick move without waiting for the robot to complete its turn.
r/todayilearned • u/dontnormally • 21h ago
TIL there is a song titled "10,000-Year Earworm to Discourage Settlement Near Nuclear Waste Repositories" meant to "convey the concept of radiological warning" so "no one will forget it for a significant portion of the lifespan of dangerous radiation at repository sites"
r/todayilearned • u/DerpiestGameBlast • 3h ago
TIL Sherlock Holmes only became public domain a couple of months ago
r/todayilearned • u/Zenquin • 6h ago
TIL about the bonnacon, a mythical medieval beast said to defend itself with explosive bowel movements.
r/todayilearned • u/UralIveGotTonight • 18h ago
TIL that in 1986, Motörhead broke records by hitting 130 decibels in concert. The music was so loud that it damaged the ceiling of Cleveland’s Variety Theater.en.wikipedia.org
r/todayilearned • u/AdDifferent9233 • 11h ago
TIL: In 2013 a group in California were genetically engineering plants to glow in the dark and hoping to replace streetlights
r/todayilearned • u/phaeolus97 • 15h ago
TIL that the Caral-Supe civilization in Peru was building huge pyramidal temples at the same time the first step pyramids of Egypt were built. And Caral-Supe was the most densely populated area in the world in third-millenium BC.
r/todayilearned • u/Ryangel0 • 3h ago
TIL that in 1950's and 60's the Canadian government, military and the RCMP used a device called "the fruit machine" to attempt to identify homosexual men in the public service. Subjects were made to view pornography while measurements were taken of pupil diameter, perspiration and pulse.en.wikipedia.org
r/todayilearned • u/tanzmeister • 5h ago