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TIL Male nipples have a purpose - they are used to “comfort nurse” babies while mom is busy, and have been used to do so across history

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b9Era TIL: Marceline from "Adventure Time" was played by the same actress that played Joanna, the pre-teen singing heartthrob, in "Love Actually".
jNewQ GPS has become a staple on any smartphone, but how does it work? How Does Your Brain’s GPS Work?
ANPlB TIL Sacheen Littlefeather, the "Native American" woman who accepted the 1973 Oscar on behalf of Marlon Brando (for his performance in The Godfather) while he boycotted the ceremony to protest the treatment of Native Americans in Hollywood, was actually a "pretendian" posing as a Native American.
p895Q TIL that the Pink Triangle, a symbol for gay pride, was originally used to denote homosexuals in concentration camps. Because the symbol also identified other “sexual undesirables,” gay men were often left imprisoned when Allied troops liberated others from the camps.
oB4bE TIL that the Boeing 747-200 Air Force One costs $206,000 per flight hour to operate (including fuel, flight consumables, and maintenance), while a commercial 747 costs about $20,000 to $25,000 per flight hour.