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TIL Conrad Heyer, 1749-1856, was the earliest-born man known to have been photographed. He fought in the U.S. Revolutionary War.

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x60mo TIL: For All Moonkind is a nonprofit working with the UN to preserve human heritage in space to protect damage to historical sites by tourists or errant explorers. It consists of Space Lawyers, policymakers, and space archeologists. It receives bipartisan support in the US.
4X0O5 TIL that up until 2013, a woman living in Paris, France could, in theory, be arrested for wearing pants (trousers) without authorization! This was the result of a forgotten local ordinance from 1800, which was abrogated on the spot for violation of gender equality.
XEOZ6 TIL the sun loses about 6 million tons of mass every second due to nuclear fusion and the solar wind. Despite losing that much material, it has only lost about 0.05% of it's original mass over the past 4.5 billion years.
wL18E TIL that the history of "sticky caps" (alternating upper and lower case in words to convey a mocking, sarcastic, disdainful tone) can be traced back to the 1970s
wyP1 TIL 40% to 50% of the genetic information found in your GI tract does not match anything that’s ever been classified before–not plant, animal, fungus, virus, or bacteria. We have no clue what it is. Biologists call it “biological dark matter.”