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TIL that variable gears on a bicycle predate the motor vehicle by almost 20 years.

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690Nm TIL the fun fact of “Your body has around 100,000 km of capillaries alone, the tiniest of your blood vessels, with a surface area of around 1000 square meters." Is not correct. The real value is closer to 9000 and 19,000 km.
GAWG1 TIL that congress has known since 1975 that government intelligence agencies have been involved in the violation of minority civil rights.
NaY8 TIL that the Netherlands voted “Swaffelen” as their word of the year in 2008. It means to repeatedly smack one’s penis against someone or something.
9wgVQ TIL dummer boy Charley king was the youngest soldier to die in the American civil war. At the battle of Antietam he was wounded by a shell. He died of wounds in a field hospital near the battlefield on 20 September 1862. He was 13 years old
pY0e TIL Porn subscribers with female names are flagged as signs of potential credit card fraud