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15

TIL Approximately 84% of the cells in the human body are red blood cells.

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PjdO TIL Bing Crosby was rejected from a club in Vancouver for wearing only denim. When Levi’s heard they made him a denim tuxedo jacket, originating the term “Canadian Tuxedo”.
neX0b TIL of the Judean Date Palm. An extinct palm variety that was revived using 2,000 year old seeds.
OovE4 TIL that the word 'school' came from the ancient Greek for 'free time' and 'rest'
L4bV TIL the median age of the country of Niger is 14.8 years old. 50% of the population is under the age of 15.
wjvE TIL The USSR named one of its last policies (which allowed the nations of the Eastern Bloc to determine their own internal affairs) the ‘Sinatra Doctrine’ - a reference to the Frank Sinatra song “My Way” as the Soviet Union was effectively allowing its satellite states to go their 'own way’.