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TIL that Alexandria (Egypt) came to be regarded as the capital of knowledge and learning, in part because of the Great Library. It was unprecedented due to the scope and scale. According to popular description, an inscription above the shelves read: "The place of the cure of the soul."

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7r7nZ TIL about LIDAR, similar to SONAR and RADAR, this technology bounces light off of the Earth to map features of the land. Even peering through dense forest, it's changing how all sorts of fields of study see the land's topography.
7rKjb TIL A Burl is large growth on a tree trunk arising because of an over reaction to an insect attack where the cells go into overdrive. Burls are sought after for wood turning as the growth rings make very intricate patterns.
R5W18 TIL We have at least a 50/50 chance, if we could travel there today, of finding at least some form of primitive life on a planet (K2-18B) that is 124 lightyears away given markers in the atmosphere, JWST observations, and the chemical and physical parameters of the planet in relation to it's star.
o9nE TIL easily more than 10% of women cheat on their spouses (as confirmed irrefutably by a study of baby blood types differing from father’s [pg72 The Science of Adultery])
7wnX TIL the Earth’s day got shorter by 2.68 microseconds because of the 2004 Indian Ocean earthquake