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TIL there’s a protein made by placenta cells called syncytin which aids in the attachment of the placenta to the uterine wall, making it essential for nutrients to get to the developing fetus. The gene that codes for the protein actually came from a virus millions of years ago.

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VBnyG TIL that during WW2, the US also confined people with German and Italian ancestry (many who had US citizenship).
WjAX TIL Gary Sinise (LT Dan) started a band after 9/11 called the LT Dan Band and has performed an average of 30 Gigs per year since for Soldiers serving over-seas, and is the national spokesperson for American Veterans Disabled for Life memorial
xVVGk Of all the bodies in our solar system, the sun is probably the one we want to give the widest berth. It gushes radiation, and even though its surface is the coolest part of the star, it burns at about 9,940°F, hot enough to incinerate just about any material. As such, there are no plans to send a manned mission in its direction anytime soon (Mars is much more interesting, anyway), but it can't hurt to figure out at what distance a person would want to turn back. You can get surprisingly close. The sun is about 93 million miles away from Earth, and if we think of that distance as a football field, a person starting at one end zone could get about 95 yards before burning up.
5VVrk TIL that the Squid Game Doll is named Young-Hee after a character in Korean textbooks similar to Jane in the Western world. It is also a real ornament used by a carriage museum and was only borrowed for filming the series.
BrMAD TIL Kurt Cobain's famous line “It’s better to burn out than to fade away” is a reference to Neil Young's song ‘Hey Hey, My My (Into The Black)’. In an interview, Young said: "When he died and left that note, it struck a deep chord inside of me. It fucked with me."