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TIL that an English inventor invented a thermal shielding material, called Starlite, which was able to withstand extreme heat (10,000 degrees C), but never revealed its composition in fear of reverse engineering and losing control of rights to the material.

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BrDgW TIL samurai took the heads of their enemies as proof of their kills. This practice was part of the Bushido code, with strict rules on maintaining and presenting the heads. Once presented, these kills were then recorded in the official 'Book of Heads'.
XEeej TIL Norway wanted to give Finland a mountain for its 100th birthday
Z851Q TIL about the Atherstone Ball Game which is a Medieval football game played annually in England. Members of the town brawl over a large ball up and down the towns small ancient streets. The aim is simple: make sure you're holding onto the ball when the game ends. One rule : don't kill anybody!
PoWn TIL the Romans invented a hydraulic cement in 25 B.C. The basic principles of this recipe are still used to this day.
4nxo TIL after Mozart died, his wife married a Danish diplomat who’s head stone reads “here lies the husband of Mozart’s widow”