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TIL the Byzantine Emperor Basi II, or Basi the Bulgar Slayer, after the Battle of Kleidion, put captured Bulgarians into groups of one-hundred, and left ninety-nine of each group blind. The latter of whom was captured and left with only one eye, and had to lead the blind group back home.

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16nnP TIL a study showed evidence that postmenopausal orcas protect their sons from fighting other orcas, while similar behavior was not observed towards their daughters. Analysis of nearly 7K pics taken over almost 50 yrs, concluded the effect of fewer socially inflicted scars only existed on their sons.
grPmX TIL that industrial beehives are built around the concept of "bee space," a specific gap width that bees will avoid plugging with comb or propolis (bee glue)
xGo1 TIL that Chinese archeologists discovered a 2400-year-old bronze sword, untouched by corrosion, beautifully decorated and still sharp enough to cut with a touch.
LQyVZ TIL that the first written mention of the card game "Blackjack" was in the novel "Rinconete y Cortadillo", written by Miguel de Cervantes (Author of "Don Quixote" ). likely because he was a gambler. The game is used by the protagonists to cheat people out of money.
ODy4 TIL: that the “women make 77c on a man’s dollar” stat is obtained by averaging out a random group of men versus a random group of women. When adjusted for age, same career and same experience, women earn about 95.9-92.2c on a man’s dollar. (pg 29 for statistics)