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TIL that the Karen are an actual ethnic group of approximately 7.5 million Sino-Tibetan peoples. While the group as a whole is heterogeneous and disparate, some of the Karen, led primarily by the Karen National Union (KNU), have been in a constant state of war since the 1940s.

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eRok TIL: there is a record entitled ‘The Best of Marcel Marceau’ which is nothing more than 38 minutes of complete silence followed by thunderous applause. Marcel Marceau was a mime…
wgyP TIL your hearing doesn’t “turn off” in your sleep, your brain just tunes out or “ignores” any incoming sounds.
A6Kg TIL in a test of cognitive dissonance, researchers paid participants either $1 or $20 before completing a boring 1-hour task. Afterwards, those who were paid $1 said the study was stimulating while those paid $20 said they hated it; the low-paid people had to rationalize doing the task for only $1.
x6e5g TIL about SubTropolis, a giant former limestone mine under Kansas City that was converted into the world’s largest underground business complex. The 1,100-acre complex is accessed through tunnels, and as of 2015, 1,600 people worked there.
loB0V TIL that after Beethoven went deaf, he found he could affix a metal rod to his piano and bite down on it while he played, enabling him to hear perfectly through vibrations in his jawbone. The process is called bone conduction.