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TIL Yellowstone’s famed thermal pools can melt flesh and bone. In 2016, a tourist illegally searching for a swimmable hot spring fell into a portion of the Norris Geyser Basin, where his body was dissolved by the 450 degree, highly acidic water. His wallet and shoes were all that remained of him.

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b6Dr4 TIL Batman’s fascination for and attraction to bats is due to a unique psychological response to fear and anxiety called a“counterphobic attitude” which involves a person actively seeking out the sources of the things that frighten them in the hope of overcoming their fears and becoming stronger.
a8JYJ TIL sⅼavery continued to exist in Nigeria until the 1940s
BlrK TIL in 19th century Germany there was a man who was both the local tax collector and caretaker of the dog pound. Since tax collecting was a dangerous job, he used the pound to make a new breed a dog that would protect him while collecting. His name, Karl Friedrich Louis Dobermann.
GoBN TIL that when medieval Islamic scholar al-Biruni was trying to determine the exact position of qibla (the Muslim direction for prayer), he realized that a vast span of Earth’s land was unaccounted for in the modern maps of the time. This turned out to be the American continent.
mxyQp TIL There's no evidence that Neanderthal females bred with Sapien males, perchance because: it led to mutations that caused the offspring's extinction; hybrid offspring of Neanderthal mothers became extinct with them; or female Neanderthals and male Sapiens did not produce fertile offspring