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TIL Frederick Douglass was the most photographed American of the 19th century, and never smiled in photographs to not appear stereotypical.

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OGGEL TIL that rogue waves, large waves that occur in unusual circumstances, have been found in media other than water, such as helium gas, quantum mechanics and finance
WMPX TIL Patrick Stewart left his bags unpacked for the first six weeks of filming Star Trek: TNG because he thought the show would fail.
vAb4 TIL peanut butter packaged in single slices like cheese is a failed invention.
PYE1w TIL babies open their eyes in the womb at about 28 weeks. After that, twins are likely to touch each others’ faces or hold hands.
gM8NA TIL that there are only 3 original citrus fruits: pommelo, citron and mandarin. Most other citrus fruits are hybrdis of these 3 (eg. orange= pommelo x mandarin)