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60

TIL Sub-replacement fertility that is a fertility rate which, if sustained, leads to each new generation being less populous than the older is around 2.33 as opposed to the intuitive guess of 2 children per woman.

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OG8Re TIL about the Boteh (Buta) a Zoroastrian symbol of life and eternity originating from Persia (Iran) that became a popular textile motif throughout Asia and later the inspiration for paisley design motif
G5Og TIL the Queen can de-knight someone, one of the last people to be de-knighted was a financier who participated in a scheme to inflate the share price of Guinness.
kONE7 TIL In early days of penicillin, it was so expensive it was extracted from patients urine and reused on other patients.
MeLV TIL mini golf was invented in 1867 because women couldn’t play ‘real golf’ because Victorian manners meant women couldn’t raise clubs over their shoulders on backswings.
60aW TIL that his mother was the only person that Soviet dictator Joseph Stalin was afraid of.