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TIL Algeria has turned off its internet nationwide during high school exams in a bid to tackle cheating

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KO7E4 TIL the 1979 disco hit "Ain't No Stoppin' Us Now" almost became the national anthem of Sierra Leone after a 1992 coup.
rNbVw TIL of Minor Scale, an explosion that contained 4,744 tons of fuel oil and ammonium nitrate. Detonated on June 27, 1985 to simulate the effect of an eight-kiloton air-burst nuclear device, it was reported as “the largest planned conventional explosion in the history of the free world".
KYbJ4 TIL the Child Ballads - a collection of English and Scottish ballads - aren't named because they're intended for young audiences. They're named as such because they were collected into an anthology by folklorist Francis James Child.
VBWD8 TIL of The Kardashev scale: A 1-4 scale method of ranking planetary civilizations based on how technologically advanced they are. On the scale, humans are currently at mere 0.73
W7YNB TIL the Indian city of Vijayanagara was likely the second largest city in the world at the start of the 1500s, with an estimated 500,000 residents. Following a six-month siege, Vijayanagara was abandoned in 1565 and never rebuilt.