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TIL Inside Abraham Lincoln’s pocket watch is a long-hidden message

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9Y6N7 TIL modern DNA testing exists due to Yellowstone park, as DNA polymerase chain reaction is made possible by a chemical isolated from Yellowstone Park bacteria
a5gZ TIL that a 2013 study showed that if you have an itch on the left side of your body, you can relieve it by looking into a mirror and scratching the right side of your body (and vice versa).
Z80ka TIL that Disney's 1994 film The Lion King was made by their B-team of animators. The company expected Pocahontas to be the bigger hit and had their A-team make that movie.
QVgE TIL of the frequency illusion (also known as the Baader-Meinhof phenomenon),the phenomenon in which people who just learn or notice something start seeing it everywhere.
69ejQ TIL The blocks in Tetris are called Tetrominoes