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TIL: The (female) appendix can be surgically removed using a small incision in the patient’s vagina leaving no external scar, no damage to the abdominal wall, minimal postoperative pain, and an almost immediate return to normal activity.

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GY77g TIL butterfly knives originated in the Philippines after WWII as a product marketed to American soldiers.
p8bpb TIL that the ancient akkadians believed that the clouds were the breast of the goddess antum and rain was her breast milk.
d8y07 TIL Sperm whales are the loudest animals on earth. At 236 decibels, their click sounds can literally vibrate a human body to death. But when research divers approach them, the whales welcome them into their pod; while modulating their clicks so the divers aren't hurt.
5Y8vR TIL that Linux operating system Ubuntu, is named after the Nguni philosophy of ubuntu, which Canonical indicates means "humanity to others" with a connotation of "I am what I am because of who we all are".
Lk8G0 TIL in 1990 the Lockheed SR-71 Blackbird set a speed record when it travelled from LA to Washington DC in a bit over an hour, with an average speed of 2,144 mph.