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TIL many Nordic Europeans have an Allele called CCR5 Δ32, which makes them immune to HIV/AIDS

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W7ZlL TIL that, after being disqualified from the 1953 Le Mans race, driver Duncan Hamilton found a local bar in town and got drunk. Shortly thereafter, officials ruled that he could enter. Hamilton subsequently won the race.
KOyJ9 TIL in 1983, 50 corporations controlled 90% of the American media, including magazines, books, music, news feeds, newspapers, movies, radio and television. By 1992 that number had dropped by half. By 2000, six corporations had ownership of most media, and today five dominate the industry.
Oo8LX TIL of the Lead-Crime hypothesis which states there is a proposed link between childhood exposure to lead and increases in violent crime later in life. The hypothesis argues that the removal of lead additives from motor fuel and the decline in lead exposure explains the reduction in crime after 1990
LOMm TIL that one of America’s most well known British TV actors (John Hillerman, Higgins, of Magnum PI fame) isn’t British at all, but is a native Texan, who learned his accent from performances of Laurence Olivier.
QJR9X TIL the zipper brand, YKK, makes everything they use in their production processes, in-house. From the machines they use to make their zippers, to smelting their own brass - they even make the boxes they ship their zippers in.