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TIL The Stethoscope was invented because French physician Rene Theophile Hyacinthe Laennec felt uncomfortable placing his face on a woman’s breasts to listen to her heartbeat

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9YRar TIL the song Over the River and Through the Wood is actually about Thanksgiving, and although we don't usually associate Thanksgiving with snow, at the time it was written, in the early 19th century, New England was going through the Little Ice Age.
wL10J TIL about Shigeru Yokosawa, a sixty-year-old hospital admin who sacrificed his life by, in the face of an approaching tsunami, rushing to retrieve the hospital's satellite phone. The phone he saved became his colleagues' only lifeline to the outside world after the disaster.
6EEEZ TIL Ketogenic Diets Have “Profound Effect on Brain Function”: ’… two new studies published in Cell Metabolism show how cutting back carbohydrates and intermittent fasting not only helps with weight, but may stretch out your life while improving your memory along the way - in mice, at least.
MeMeV TIL the Gemini 3 was named Molly Brown in the hope that it wouldn't sink at splashdown. NASA didn't like this and asked astronaut Gus Grissom to change the name, to which he replied "how about the Titanic?". NASA relented, but this was the last time astronauts were allowed to name their capsule.
MeoYV TIL that until 1902 the Okapi was thought to be a mythical creature, even being called the "African unicorn".