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TIL about the Leaning Tower of Niles, a half-scale replica of the Leaning Tower of Pisa, located in Niles, IL and completed in 1934.

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via reddit.com

0dr4y TIL of the humorous and ineffective sorting algorithm Miracle Sort, where it keeps checking an array until it becomes sorted. It requires external force (a miracle) to change the array in some way so it becomes sorted, or that the array is already sorted to begin with.
b6Mvj TIL that for decades, radiotherapy patients had reported phenomena such as "flashes of bright or blue light" when receiving radiation for brain cancer. This was confirmed to be Cherenkov light being generated in the fluids of the eye by researchers in 2019.
JYWNl TIL that bills making North Dakota and South Dakota into states were signed on the same day, and President William Harrison deliberately shuffled the papers together so history would be forever unable to tell which legally came into being as a state the first.
vKrK TIL Researchers placed a human language-gene FoxP2 into mice – finding their vocalization to change, and their speech-related brain regions to increase plasticity and branching
m1GPY TIL researchers studying nominative determinism found that orthopedic surgeons are more likely to have the surname "Limb" than is expected by chance (Limb, Limb, Limb, & Limb, 2015)