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TIL about the Flynn Effect, the increase in average human IQ scores, averaging roughly 3 points per decade, throughout the 20th century. But recent data indicates that the Flynn effect has stalled or even reversed in some developed nations.

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epwZJ TIL in 1976 Muhammad Ali fought a MMA match against Antonio Inoki in Tokyo, Japan. Billed as The War Of The Worlds. The fight ended in a draw.
R7BK4 TIL After publishing his 1953 National Book Award winning debut novel Invisible Man, Ralph Ellison got to work on his second novel. In 1967 the manuscript of his already-overdue second novel was destroyed in a fire in his home. Ellison did not publish another novel before he died in 1994
GwoG TIL J.K. Rowling lost her billionaire status because she donated so much of her money to charity
lBkK TIL that during the siege of Jerusalem in 1917, the British started to airdrop cigarettes filled with large doses of Opium, hoping that the Ottomans would be too stoned to fight. It worked.
wok6Y TIL that children born earlier in the academic year have a higher chance of participating in upper echelons of sports or academia. This is known as the Relative Age Effect.