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TIL that the barber pole became the universal symbol for barbers as it resembles the bloody bandages of “barber-surgeons” of the past, who practiced bloodletting.

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J1yoj TIL the first movie trailer dates back to 1913, for the movie The Pleasure Seekers
OGXxX TIL that the second most translated book behind only the Bible is The Little Prince by Antoine de Saint-Exupéry
d8Z5E TIL that modern computing can be traced back to fabric making on looms in the early 1800's. Punchcards were used to programmatically weave patterns. Named after their founder, Jacquard Loom cards helped inspire Charles Babbage's Analytical Engine and early IBM computing.
9YGEQ TIL the Nobel Prize winner Fritz Haber Haber-Bosch process of artificially generating ammonium nitrate was not only responsible for the entirety of the Axis powers explosive ordinance capability in WW1, but also for our present day capacity to feed a multi-billion population
KO4XQ TIL that the theory of gravitationally-assisted space travel - which enabled NASA’s Voyager and other missions to explore the solar system - was invented by a summer intern at JPL in 1961. He and his revolutionary idea were initially ignored, and he was not offered a job at JPL or NASA.