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TIL: An Alaskan husky in the Iditarod will burn about 9,666 calories each day; a rate of caloric burn 3.5 times that of a human Tour de France cyclist. The aerobic capacity of a typical Iditarod dog is three times that of a human Olympic marathon runner.

x6MQ1 TIL: To become King Louis XV's official mistress, Madame du Barry had a fake birth certificate made to hide her humble origin as the illegitimate daughter of a seamstress. The birth certificate claimed her family were nobility and that she was 3 years younger than her actual age.
rRwJ4 TIL in the 1880s, the Harvard Observatory director was frustrated with his staff, and would say "My Scottish maid could do better!" So, he hired his Scottish maid. Williamina Fleming ran a team for decades, classified tens of thousands of stars, & discovered white dwarfs and the Horsehead Nebula.
x6600 TIL Leon Lederman, recipient of a Nobel Prize in Physics and author of The God Particle, faced overwhelming medical debt near the end of his life and was forced to sell his Nobel Prize to pay it off
VBGWD TIL that “coulrophilia” is a popular subculture of the BDSM community involving the sexual attraction to clowns, in which participants often use clown related costumes, props, and personas during sex.
0PGv TIL in 2001, Ashton Kutcher’s girlfriend was stabbed to death in her home. When she didn’t answer her door later, Kutcher peered in her window and left, mistaking her blood for a wine stain.