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TIL during WW2 Japanese soldiers used bio-luminescent species of Ostracod as a source of light to read maps on the battlefield without giving away their position. When mixed with water, the dried shells of these Ostracods give off a cold blue light.

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JpZl TIL in North Korea women are not allowed to ride bikes, wedding ceremonies MUST be held before one of the 34,000 Kim-Il-Sung statues, and citizens must display in their homes a portrait of their leader.
xVav5 TIL at 19 years old, Chris Pratt was waiting tables at a Bubba Gump Shrimp restaurant in Maui when he was scouted by a director. At the time he was living in his van and had previously studied acting at a community college for only a few weeks.
ZA1D TIL that skin bleach is used for scars and not just buttholes
9YWj6 TIL animals can't make vitamin D in their skin because their fur or feathers shade it from the sun. In the oils secreted on their fur or feathers are the precursors, and after vitamin D is produced they lick it up when grooming.
7ZAL TIL In 1918 A black man named Laurence C Jones survived a lynching attempt from a White mob by convincing them of his passion to educate Black kids. The mob ended up collecting money for his cause.