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TIL the the longest running scientific experiment is the pitch drop experiment that started in 1927

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via reddit.com

GQx4 TIL: Albert Einstein solved the Tea Leaf paradox where tea leaves in a cup of tea migrate to the center and bottom of the cup after being stirred rather than being forced to the edges of the cup
ZpGBY TIL toilet paper was invented in 1857. Before that early North American colonists used corn cobs. Sailors used ‘tow rag’, which was a long piece of frayed rope that dangled in the water.
OoJQg TIL that During the early Middle Ages, almost every scholar thought the Earth was round, not flat. The myth that they thought earth is flat back, picked up steam in the 1800s, right around the same time the idea of evolution was rising in prominence — and religious and scientific interests clashed.
51pQ TIL that in China it’s disrespectful to name your children after your relatives because you’ll spend much of your life talking down to a child with the same name as someone you should be respecting.
DQgkD TIL about the 2004 disappearance of journalist Guy-André Kieffer, who was kidnapped & disappeared investigating extreme financial corruption & allegations of child labor used in the production of cocoa in Africa, going all the way up to the Ivorian first family of Côte d'Ivoire