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TIL the roundels on WW2 RAF planes indicate the type of plane

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vP41x TIL Nanotechnology, a convergence of science and engineering at the nanoscale, is reshaping the landscape of medicine. This theme unveils the use of tiny particles for drug delivery, diagnostics, and even targeted therapies at the molecular level
l7QE1 TIL that the plastic flamingo is the official bird of the city of Madison, Wisconsin. It owes its origins to a 1979 prank by students at the University of Wisconsin.
WJPL TIL - Alf Adams came up for the idea of the ‘strained-layer quantum well laser’ walking on the beach with his wife. He paused for a moment and asked her to stop talking for a moment to let him think, these lasers are now used in almost every household today
kJjk1 TIL that some European languages do not have a word for Bears, preferring to use euphemisms such as The Brown one, Mr Brown ,and He who eats honey. This was because of the old custom that stated that a bear would come if it's name was called
1a5L4 TIL The original title of Saturday Night Live was "NBC's Saturday Night", due to the existence of an ABC show titled "Saturday Night Live with Howard Cosell". This is why the famous opening phrase is worded "Live from New York, it's Saturday Night!".