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TIL about 2,4-DNP, a chemical that was used, among other things, to make black dye. 3 workers died during the 1890s after accidentally ingesting it. It dissipates energy from food in the body as heat, making people rapidly lose body fat and die from an excessive rise in body temperature.

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GY6EE TIL: The reason that Moths are attracted to light is because prior to man-made artificial lighting, they used the light of the moon to help them navigate, so they mistake lights with light of the moon!
OoW76 TIL about the Expulsion of the Acadians, the forced removal by the British of the Acadian people who refused to sign an unconditional oath of allegiance to Britain during the French and Indian War. Many settled in Louisiana. The French word "Acadien" evolved and was anglicized as the word "Cajun".
dDLNZ TIL the Palace Theater Light (Or Eternal Light) is the second oldest light bulb still working in the U.S. Installed in 1908 just a few years after the Centennial Light. Both have carbon filaments and were made by the Shelby Electric Company
gMBEy TIL that the Apollo 11 astronauts signed applications to Travelers Insurance Company for space travel accident insurance for their mission to the moon. The policies would insure against accidents but also against "disease endemic to the lunar surface or its environs".
x6mE1 TIL that from the 14th to the 19th century, the Earth experienced a period of global cooling called the Little Ice Age, which caused widespread crop failures, famine, and social unrest in Europe and beyond.