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TIL that octopuses have been observed learning how to dismantle Lego structures and open child-proof caps on medicine bottles.

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xVp00 TIL that "pink slime" is a meat by-product produced by heating and centrifuging beef trimmings. It is approved for limited human consumption in the United States but is banned for human consumption in the European Union.
e00pn TIL in 1930, Ellen Church (a licensed pilot herself) persuaded airlines to change their minds about hiring females by challenging them: “Don’t you think that it would be good psychology to have women up in the air? How is a man going to say he is afraid to fly when a woman is working on the plane?”.
4X4ga TIL in the early 1900s, women used hatpins to fend off sexual harassers in the streets. These pins were so effective in fending off assaulters that legislation was proposed to curb these “accessories to assault.” Men would often come away with wounds that were “not serious, but very painful.”
RykQ TIL One of the thirteen articles in the 1781 US Articles of Confederation states that if Canada wants to be admitted into the United States, it will automatically be accepted.
gVxb TIL that Marie Curie was at the center of a sex scandal (cheated on her husband with a student & it leaked to the press) at the same time she was winning her second Nobel Prize.