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TIL that Frank Sinatra was offered the lead role in Die Hard

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nWKOr TIL: mRNA was first tested in the 1990s, but a 2005 breakthrough made it stable for medical use.Early attempts failed as mRNA degraded too quickly. In 2005, scientists developed lipid nanoparticles (LNPs) to protect it, enabling new medical applications
KOpv4 TIL of the Inughuit of northwest Greenland, the world's northernmost people. When contact was made in 1818 they had been isolated for several hundred years and were completely unaware of the existence of other humans.
pxp4 TIL that modern flat glass is created by floating molten glass over molten tin. This is what gives glass its uniform, smooth surface.
neRx7 TIL that a very large telescope in Chili is officially called “the Very Large Telescope.”
Bgayr TIL Giovanni da Pian del Carpine was the first European to enter the court of the Great Khan. At 63 years old Carpine road 3000 miles in 106 days (including lent when he ate only salt, millet, and water) to appear before Khan Güyük. When Carpine returned he was made the Primate of Serbia.