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TIL that the last Kauaʻi ʻōʻō (now extinct) was male. It’s song was recorded in 1987. It was recorded singing a mating call, to a female that would never come. It died in 1987 as well.

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Z87Xo TIL that the mystery novelist Agatha Christie posthumously saved a girl’s life by having written in one of her stories about a rare poison. That same poison was killing this girl in real life, and the doctors had no clue, but a nurse happened to be reading that story at the time.
NvXJ TIL that humans can live unprotected in space for about 30 seconds if they don’t hold their breath.
M7bLB TIL That the dot above an i or j is called a tittle.
yQaKe TIL Angkor Wat is the largest religious monument in the world sitting on 162 hectares or 402 acres. The artistic legacy of Angkor Wat led to France adopting Cambodia as a protectorate in 1863.
PYpLO TIL about solved games. Solved games are games whose outcome can be correctly predicted from any position, assuming both players play the best possible moves. Tic-tac-toe is easily solvable. Chess may never be fully solved.