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TIL that the act of vomiting involves a complex series of chain-link reactions by your body that connect to a "vomit center" in the brain. The lower digestive system in cases of perceived poisoning shuts down and causes the stomach to convulse in order to bring everything back up the way it came in.

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QWK9 TIL in WWII a woman-only Soviet bomber regiment were nicknamed the “Night Witches” by German soldiers. For a successful bombing run, the Witches would cut the engine of their archaic and noisy aircraft. Gliding in, they would release their bombs before the enemy even knew they were there.
nWdPW TIL about ‘7Up’ — in which UK sociologists interviewed 14 children aged 7 from 1964-2021 every 7 years. Documenting real-life affairs, homelessness, divorce and serendipitous convergences even between subjects in later life ‘episodes’.
eppRJ TIL that people with red hair are more sensitive to pain and more resistant to local anesthesia due to the MC1R gene. They may require up to 20% more general anesthesia (such as Novocaine)
Wm08 TIL in 1961, Fidel Castro closed Cuban schools for a whole year and formed teachers into a “literacy army” with the goal to eradicate illiteracy. By the end of the year, 707,212 previously illiterate people had learned how to read.
vPOgj TIL Andronico Luksic, the founder of Chile's wealthiest family worth approximately 18 billion, was able to greatly expand his mining business after a Japanese company mistakenly paid him 500,000 dollars for copper interest instead of the 500,000 Chilean pesos he had requested, roughly six times more