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TIL the British submarine HMS Artful can stay submerged for 25 years without having to surface for air

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VMZLQ TIL about Cahokia, the largest pre-Columbia city in what is now the United States. Its pyramids and earthen mounds stood near present-day East St. Louis, IL. Around the year 1050, it had 30,000 people, making it larger than London or Paris at the time. It was abandoned by 1400.
X0eXQ TIL that there’s a medical procedure called “Fecal Transplant” that literally consists in collecting feces, also called stool or poop, from a healthy donor and introduce them into a patient’s gastrointestinal tract. The procedure can control an infection called Clostridium difficile.
ADRD7 TIL: Chase Bank and J.P. Morgan & Co helped Germany in WWII by allowing Nazi sympathizers to purchase Marks (known as Rückwanderer) with dollars to fund the war effort. The banks also turned over their client lists to the Nazis who in turn used it to recruit spies in the US.
QVre TIL Aaron Swartz, a tech whiz-kid and political activist, tried to liberate almost 5 million restricted articles and $50,000 worth of text books to the public, but ended up facing $1m and 35 years in jail, which ultimately drove him to hang himself.
rooo TIL there’s a poem called “The Chaos” by Gerard Nolst Trenité which was written to show differences in pronunciation of English words spelled similarly and only rhymes if you know how to pronounce them correctly.