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TIL that the drinking age in Puerto Rico and the U.S. Virgin Islands is 18

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via reddit.com

QNJ9 TIL that placing a stamp upside down means “I love you.” Stamp orientation has conveyed protest and secret messages for decades across the world.
kJ89W TIL about Operation Midnight Climax, a CIA program in the 1950s and 1960s that involved the use of prostitutes to lure unwitting individuals into apartments that had been set up with hidden cameras and microphones. Part of MK-Ultra
YKG7 TIL the oldest piece of paper in the world was found in China and dates back to the second or first century B.C. Paper was so durable, it was sometimes used for clothing and even light body armor.
lo7OA Yes, but no more than listening to Justin Bieber. The misconception that there's something unique about Mozart's ability to increase brainpower began in 1993, with a paper in Nature. Neurobiologists Gordon Shaw, Frances Rauscher and Katherine Ky of the University of California at Irvine found that students who listened to 10 minutes of a Mozart sonata demonstrated a temporary increase in spatial-temporal reasoning, as measured by an IQ test.
78Wob TIL of "Sukiyaki" by Kyu Sakamoto which topped the Billboard Hot 100 chart in 1963, one of the few non-English songs to have done so, and the first in a non-European language. It was the only single by an Asian artist to top the Hot 100 until the 2020 release of "Dynamite" by BTS