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85

TIL in 1935, singing cowboy Gene Autry released a Western film in which he is kidnapped by an ancient underground civilization with robots and television.

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6EXDQ TIL the world's largest underground city is found in Montreal, where 20 miles of underground walkways are filled with 1600 shops and 60 subway stations.
E1vgw TIL that Teddy Roosevelt took a break from the presidency to go camping with John Muir for four days. They explored without any supervision/security. Roosevelt was so inspired by the trip that it eventually led to the creation of the National Park Service.
DG7g TIL Snoop Dogg has been nominated for 17 Grammys but has NEVER won
xRR0 TIL of Deborah Sampson who disguised herself as a man to fight in the U.S. Revolutionary War, served in an elite Light Infantry unit and was wounded in battle. After her secret was discovered, she was honorably discharged, but had to fight to receive her veteran’s pension.
4kr4R TIL The Apollo 15 crew were dehydrated and had severe potassium deficiencies as a result of lunar surface operations. To prevent this in future missions, Eugene Kranz spiked astronaut John Young’s orange juice with potassium