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TIL that the last official engagement Australian PM Harold Holt was invited to before his disappearance in 1967 was a screening of a movie that cast a Malysian born actor and a and white actor as Indigenous Australians

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VBGmG TIL: during the conquest of the Aztecs, Hernán Cortés was a wanted criminal, having foregone orders by the colonial governor of Cuba to cease operations. Expeditionary forces were even sent to attempt and arrest him.
GAnoN TIL about Catharism: A polytheistic branch of Christianity (12-14th century) with Satan and "God" being the gods of the old and new testaments, respectively. They were persecuted by the catholics and eradicated, but its existence is questioned by scholars, unsure if it was just heretical paranoia
4XGK5 TIL Wild cauliflower is yellow. Sun exposure changes the cauliflower head from white to yellow. Farmers individually wrap the leaves of the plant around the cauliflower to prevent the color change. The color change doesn't affect the veggie's taste but it does affect customers desire to buy it.
9YW0M TIL that the most widely manufactured device in history, the metal-oxide-silicon field-effect transistor (MOSFET), was invented 60 years ago by Mohamed M. Atalla and Dawon Kahng in November 1959.
yQR9a TIL The use of barber's pole dates back to the middle ages. The barbers used to perform surgery on customers, therefore the colored stripes indicated that they were prepared to bleed their patients (red), set bones or pull teeth (white), or give a shave if nothing more urgent was needed (blue).