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TIL: When Lead was removed from gasoline in the US, it was linked to a 56% decline in violent crime. Lead is a neurotoxin that can affect antisocial behavior.

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0Yyy TIL that in the Articles of Confederation, Canada was invited to join the United States should it seek independence. This applied only to Canada unless nine states said otherwise.
nWvXG TIL that Charles V, at the height of his reign, controlled Spain, southern Italy, the Holy Roman Empire, Burgundy, and Spanish America. This was the first empire to called "the empire on which the sun never sets".
E4Xd TIL There is a film that has been in development since 1981, that by 2004 had only 25 minutes of usable footage.
pYObe TIL that a concussion doesn’t always cause unconsciousness. Most people never pass out. They may describe seeing all white, all black, or stars.
4DNJ TIL Artificial Intelligence has crushed all human records in the puzzle game “2048,” achieving a high score of 839,732 and beating the game in only 973 moves without using any undos