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TIL Pierre and Marie Curie’s laboratory books from the 1890s are still so contaminated with radiation that they’re kept in special lead boxes and people who want to see them have to wear protective clothing.

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X4gE TIL that phrases that use two synonyms to say the same thing (e.g. “will and testament”) are called “legal doublets,” and they exist because during Medieval times, English speakers spoke both French and Latin, but not typically both, and lawyers wanted to avoid ambiguity.
M7g00 Today I learned that the Gemini 3 space crew, John Young and Gus Grissom, smuggled a corned beef sandwich into space
RL64 TIL broccoli, cauliflower, cabbage, Brussels sprouts, and kale are all different breeds of the same plant.
Y7RGx TIL that the Hunga Tonga-Hunga Ha’apai volcanic eruption added an estimated 10% to the total water vapor in the Earth's atmosphere, which could remain for several years.
a8vM0 TIL a Victorian undertaker inadvertently launched the first Low Carb diet craze