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TIL of Maria Sibylla Merian, the naturalist who discovered the life cycle of butterflies and insects, painted them in breathtakingly accurate watercolors, and braved the jungles of Africa with her daughter to greatly advance the science of entomology.

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PYjVn TIL of the Jumping Frenchmen of Maine, a group of 19th century lumberjacks who suffered a rare disorder. They had an exaggerated startle reflex and would immediately obey any sudden command and repeat the words. Modern studies have concluded it was a psychological condition rather than a tic.
R5RgQ TIL that there are some people who suffer from a condition where they are unable to sleep for months on end or develop near-permanent insomnia, leading to poor memory, coordination, hallucinations, delirium, exhaustion and eventually death.
p8rAO TIL of the "Jefferson Bible." Thomas Jefferson cut-and-pasted together his own version of the philosophical and moral teachings and doctrines of Jesus, "notable for its exclusion of all miracles by Jesus and most mentions of the supernatural," including his resurrection.
KY8RJ TIL that Apples first CEO Michael Scott went on to become an expert on coloured gemstones. Micheal has even written a book on them. He has also assembled a private collection that he exhibited at the Bowers Museum in Santa Ana, California.
4kJGb TIL that one of the reasons why Wendy's restaurants got rid of their solariums (aka sunrooms) is because they were expensive to cool in the summer and heat in the winter. Another reason was due to changing architectural trends.