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TIL in Iceland, during the Medieval Witch trials, majority of the executions were directed at men, with the last execution happening in 1683.

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4XwLo TIL William "Billy" Mitchell was an US army general who was an outspoken proponent of air power and its ability to defeat battleships. Due to his unrelenting criticism of high command's refusal to adapt, he was demoted and court martialed. Today he is regarded as the father of the US Air Force.
aELJ TIL San Francisco International Airport is essentially built on top of 267 ball bearings whose support columns are capable of moving 20in any direction during an earthquake
78rQP TIL of 'Truck Wages' or 'Company Scrip, where an employer will pay employees in company minted money that is only redeemable in company owned stores. It is referenced in the sea shanty 'Wellerman' and the last company to get sued for using it was Walmart Mexico.
b95Ya TIL that the north star is 4000 times brighter than our sun. The light we see when we look at the north star was generated in the year 1587, and it has been traveling through space for 434 years to reach us.
ADeYa TIL Saskatchewan was a hotbed of LSD research in the 1950s with a 50% success rate in treating alcoholism and and architect using LSD used the infamous hospitals to make future institutions more comfortable for the mentally ill.