› added 40 minutes ago

TIL that the Y chromosome is passed almost unchanged from father to son, which is how scientists were able to trace a vast number of direct male descendants back to Genghis Khan.

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via reddit.com

XEK0r TIL that hippos ???? have pink sweat!!!
nWmOr TIL that the first airplane ticket ever sold was bought by a reporter named Albert Beach in 1908 for a flight from St. Petersburg to Tampa, Florida. The ticket cost $400, which is equivalent to around $11,000 in today's currency.
R9l1 TIL Aladdin was added to The Arabian Nights by a French translator in the sixteenth century. It originally took place in China and he rubbed a ring, not a lamp.
VDE0 TIL of the Bugis, an ethnic group in Indonesia whose society recognises five genders. Four are comparable to cis/trans male/female respectively, while the fifth, bissu, transcends gender.
GYlE7 TIL Homosexuality was still classified as an illness in Sweden in 1979. Swedes protested by calling in sick to work, claiming “they felt gay”.