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TIL that Nikola Tesla once worked for Thomas Edison but left due to a disagreement over payment for his work on improving Edison's DC power systems. Tesla went on to develop AC power systems, which became the basis for modern electrical grids.

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PY6BE TIL that the song “This Land is Your Land” was made to spite the song “God Bless America” for being too blindly patriotic
oRJaL TIL hundreds of mummified seals have been found as far as 41 miles inland in Antarctica. One tested specimen had been sitting out in the open for 1,500 years. Researchers theorize that 1-2 seals annually get lost during white-out events and accidentally travel inland, where they eventually die.
vPvj7 TIL that the country Singapore was named by a Tamil Indian king in the 11th century, and is an amalgam of the words "Singh" and "pura" meaning "Lion City"
LkNAm TIL Godzilla is now an official citizen of Japan
e0K8k TIL at age 53, Roosevelt delivered a 50 page speech after getting shot in the chest, the stack of paper for his speech cushioned him against the bullet.