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TIL each pawn in chess used to have its own name, after one of several commoners’ occupations.

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LmQp TIL of the Cathedral Effect. When ceiling height is conspicuously low or high it can promote different kinds of thinking, with higher ceilings promote abstract thinking and creativity and lower ceilings promoting concrete and detail-oriented thinking.
nWaXr TIL - the deepest underwater rescue occurred in 1973. Roger Mallison and Roger Chapman were trapped in their submersible on the seabed at 480m for 76 hours.
yKdp TIL The Hairy Frog breaks it own bones to make claws.
OoO8e TIL the solider who executed Che Guevara was later given cataract removal surgery by Cuban doctors on an aid mission to his country, using a fake name.
Z8P84 TIL Pomp and Circumstance was originally composed for the coronation of King Edward VII, but after it was played when the composer received an honorary degree from Yale, more and more schools just started using it as well until it became the default graduation tune