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TIL that text messages have been sent electrically since at least 1774 when George-Louis LeSage sent static charges between two rooms in his house via 26 wires, one for each letter of the alphabet.

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jloa TIL Aldous Huxley, author of Brave New World, took LSD on his deathbed and died tripping.
awe79 TIL the seasoned salt market was so tightly held by McCormick in the US that they were forced to sell off one of their two brands.
9wY7B TIL about Han Purple, a synthetic pigment used in ancient China, incl on the Terracotta Army. Use stopped in ~220 AD and it was rediscovered in 1990s. It was found that in very low temperatures and high pressure, it "loses" a dimension, acts as a 2D material, and is useful in quantum computing.
YpxxA TIL that Liberia, Myanmar and the United States of America are the only 3 countries not using the metric system.
ANJbx TIL a Supreme Court case challenged the Civil Rights Act of 1964 the very same year it was passed. In Heart of Atlanta Motel, Inc. v. United States, the Supreme Court ruled that Title II of the act did not exceed Congress's authority by the Commerce Clause, and the Act remained constitutional.