› added 3 years ago

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TIL: In 400BC, the Persians invented a way to make ice in the desert using evaporation cooling

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E1py0 TIL that international flights first started in the 1700s between European countries. You could even travel by air from the UK to France and Germany in just a matter of hours.
vPYxK TIL that notorious mobster Salvatore "Sammy the Bull" Gravano is now a podcaster
QwxL TIL that human fingers don’t contain muscles. The muscles that move them are in the palm and forearm
J84v TIL the only US President to have a PhD is Woodrow Wilson
QJayL TIL the Cave of Swallows in Mexico is the largest cave shaft in the world, being almost 1,000 feet wide at the bottom and 1,100 feet deep, and it's home of many birds, but despite its name, almost no swallows