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TIL of the legend that Athens’ first female physician dressed as a man to help women during childbirth. Male physicians accused her of seducing the women, leading to her appearing in court, where she revealed herself as a female and Athenian law was changed to allow female physicians.

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.
0wBoL TIL the armonica which Benjamin Franklin invented in 1761 (and some believed caused madness) owes its disorienting sound due to the way we perceive and locate sound. Above 4khz we use loudness for location. Below 1khz we use phase differences. The armonica (1-4khz) is in a range the brain is unsure.
XEZ6j TIL a large asteroid (Asteroid 2019 OK) zipped between the Earth and the Moon this past July — and astronomers didn't even know it existed until just a few days before. The asteroid was traveling at a speed of 55,000 miles per hour and came about 5 times closer to Earth than the Moon.
QNgbe TIL on July 14, 1776, Daniel Boone’s 14-year old daughter Jemima and two other teen girls were kidnapped by a Cherokee-Shawnee raiding party. As the girls were being taken they tore off bits of their clothing to provide a trail. They were found 3 days later and safely returned.
wodZo TIL about Dr. John Hinds was a Northern Irish doctor known for his contributions to prehospital care and high-speed motorcycle trauma medicine. He died in a motorcycle accident.