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TIL about "Sham" surgeries in which a placebo group is told they received a surgery when in fact they only had a small skin incision while sedated. In one study, those in the placebo group reported the same shoulder pain relief as those getting the actual shoulder surgery

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5VgrD TIL Mother's day is celebrated at different times all over the world. It's not an international holiday.
d0Vr TIL Men have nipples because mammary cells are formed in the embryo before the Y chromosome determines that the embryo is a male.
16oXd TIL a sufragette once followed Winston Churchill everywhere he went and rang a bell every time he tried to speak in public.
Bgred TIL A fluorocarbon called perfluorohexane has both enough oxygen and carbon dioxide with enough space between the molecules that animals submerged in the liquid can still breath normally.
5pjB TIL of Berthe Mayne, a Belgian singer who claimed to her family to have survived the sinking of the Titanic, traveling 1st class under an alias as the mistress of a young Canadian millionaire. No one believed her until after her death, when her belongings and correspondence corroborated the story.