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TIL The reason Popeye eats spinach is because of an error in the calculation of its iron content by chemist Erich von Wolf in 1870. He misplaced a decimal point, recording iron as having 35mg of iron per 100g, instead of its true value of 3.5mg/100g. The former is equal to eating part of a paperclip

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5Yb6Q TIL that James Buchanan was the only president of the USA to serve his term as a bachelor. He never married, and during his tenure the role of first lady was fulfilled by his niece, Harriet Lane.
OMkX TIL A Soviet probe, “Luna 15”, crashed into the surface of the moon while Buzz Aldrin and Neil Armstrong were still on it.
amob TIL of ‘Radium Girls’, US Radium, and UnDark, radium paint applied to watches and gauges. Though executives protected themselves, they denied any danger to ‘the girls’ applying UnDark and blamed health problems on syphilis. The 'girls’ died rapidly, their bodies radioactive almost a century later.
xVYeD TIL that Chinese science fiction writer Chen Qiufan published a short story using paragraphs automatically generated by AI, based on his own writing. That story won him a literary prize in a contest moderated by an AI judge, over Nobel laureate Mo Yan
9Y7lD TIL when Australian javelin thrower Reg Spiers could not afford (financially) to purchase a flight back to Australia from London, he "mailed/posted" himself back to Australia in a wooden box...a journey that took 63 hours and passed through India and Singapore. This happened in 1964.