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TIL that in addition to Red Cross organizations, there are also Red Crescent and Red Crystal organizations, with the symbols localized for acceptance by the community of each nation that has such an organization. In the past there was also a Red Lion and Sun (Iran).

Z85dv TIL of Kathleen Mary Drew-Baker, a British phycologist, whose research on the lifecycle of an edible seaweed saved and revolutionized Japanese production of nori, the principal seaweed used in sushi
JYnEv TIL that Thor Heyerdahl, a Norwegian Ethnographer, sailed from Peru to Polynesia on an primitive balsa wood raft to prove that ancient trans-oceanic travel was possible. When experts called it a fluke, he made an Egyptian reed boat and sailed it from Morocco to Central America to prove them wrong.
LQD8p TIL; Andrew J Beard, a black man who was born into slavery went on the invent the "Jenny Coupler" a device that automatically locked rail cars together and eliminated the dangerous need for a person to stand between them, saving untold lives.
X07WQ TIL that The Great Gatsby was largely considered forgettable and a commercial failure when it was published in 1925. It was only after WWII, during which free copies of novels were sent to US soldiers overseas, that the book was re-examined and became a core part of American high school curriculums.
9wO0G TIL that researchers have developed a wearable bioreactor that, with just 24 hours of use, can induce long-term limb regeneration in adult Xenopus laevis frogs. This treatment led to significant tissue regrowth and functional recovery over 18 months.