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Today I Learned that simply washing your lenses with soapy water prevents them from fogging when you wear a facemask and that this is a common technique used by surgeons and others in the operating theatre.

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nej0d TIL in 1832 after the death of philosopher Jeremy Bentham his body was preserved and displayed in the University College London, however his preserved head was henceforth placed in secure storage after it was stolen by several students and found in a luggage locker at a Scottish railway station.
Wa98 TIL that British citizens are not considered foreigners under Irish law; neither are Irish citizens under British law. Both groups can freely enter, vote, work, and retire in either country.
JYBmj TIL that 98% of the marine fish found in the aquarium hobby cannot be bred on a commercial scale in captivity; they are instead stunned using cyanide poison to enable capture, a process which not only kills many of the fish caught this way, but also destroys a square yard of the worlds ailing reefs
RZV8 TIL of a monk who had taken an old book written by Archimedes, erased the contents, and wrote over it with prayers. Scientists have determined that that monk erased a previously unknown book by Archimedes, that laid out the foundations of Calculus thousands of years before Newton and Leibniz.
yQ7Wp TiL That Prince asked Journey's Jonathan Cain for his blessing when he had recorded "Purple Rain" because he was worried it sounded too much like Journey's "Faithfully"