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TIL that until the 19th century the dominant sleep pattern in western societies was biphasic. After 3-4 hours of sleep, people would be awake for about an hour doing whatever before they sleep again until dawn.

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OwYa TIL of Ernst Loof, the record holder for the shortest F1 career. In his first, and last, Grand Prix, he traveled 6 feet (2 metres) off the starting grid before retiring due to a malfunction.
0wZNR TIL giant tortoises on whaling voyages were stored helplessly on their backs for up to six months before being killed and eaten. While alive, they drank gallons of water at a time and kept it in a special bladder, making a properly-butchered tortoise a source of cool, perfectly drinkable water.
VQGk TIL that when Wayne Gretzky retired in 1999, he held 61 NHL records. He currently holds 60.
YpVdA TIL: In 2004, George Harrison and Prince were inducted in the Rock and Roll Hall of Fame. Tom Petty, Steve Winwood, and other famous guitarists were playing “While My Guitar Gently Weeps.” Prince took the last solo and threw his guitar in the air at the end. They don't know where the guitar went.
oRRno TIL of the "Forgotten Winchester", a heavily weathered rifle found in leaning against a tree in Great Basin National Park in 2014. It was manufactured in 1882 and round of ammunition recovered from it was dated between 1888-1911. Who left it there and why they never returned is a mystery.