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TIL: In 1971, American Airlines had piano bars on their aircraft

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OoKkL TIL that the last date that all living humans were together on Earth was November 2nd 2000. Since then there has always been someone constantly onboard the International Space Station.
ebYE TIL Elon Musk called Apple the ‘Tesla graveyard’, alleging that many of the tech giant’s senior staff are former Tesla employees who couldn’t make it at his company. Stating: “We always jokingly call Apple the 'Tesla Graveyard.’ If you don’t make it at Tesla, you go work at Apple. I’m not kidding.”
D17Vv TIL that the coin-operated vending machine was invented about 2,000 years ago by Hero of Alexandria, an engineer and mathematician in first-century Roman Egypt. Users inserted a coin, which fell onto a pan that was attached to a lever that opened a valve and dispensed holy water.
KOke6 TIL that bug spray doesn’t actually repel bugs, it masks your scent so they don’t find you as easily
69VQZ TIL In 1939, Poland had over 3 million Jewish citizens. Today, it's between 25k and 100k.