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TIL Inge Lehmann, who discovered that the centre of the Earth is solid, is also one of the longest lived scientists in history, living to 104 years of age and wrote her last scientific article at 99

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Y7ZYG TIL Dali gave a presentation at a 1936 art exhibition in a diving bell, and almost suffocated.
aw0VN TIL the USSR changed to a six day week to force Christians to work on Sunday and made Christmas a national day of work
QN8Ya TIL about the "Loneliest Tree on Earth," a Sitka spruce on Campbell Island, over 170 miles from the nearest tree. It was planted by a lonely meteorologist in 1907.
4leg TIL Victoria cross recipient Charles Smith Rutherford, single-handedly took 45 German soldiers prisoner. After calmly drawing his revolver he managed to convince the enemy that they were surrounded.
l7JXA TIL that more men than women are colorblind, not because knowing colors is considered a feminine trait, but because it is a sex-linked gene. Colorblindness is a recessive trait on the X chromosome, so men only need one bad X to be colorblind, whereas women need two.