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TIL that soldiers that wielded bronze swords used the metal filings from sharpening their blades after combat as a disinfectant for their wounds, due to copper's anti-microbial properties.

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R7Kgl TIL that "Daisy Bell (Bicycle Built for Two)" was the first song ever sung by a computer using speech synthesis. This is referenced in 2001: A Space Odyssey when HAL 9000 sings the song as astronaut David Bowman dismantles his brain.
kwv1 TIL there was a street artist in Brazil, that painted skulls in Sao Paolo tunnels with stencils and a pressure washer, forcing the city to clean the tunnels to remove the artwork.
8ax98 TIL about Gulf War Illness: Over 1/3 of the veterans that served in the Gulf War experience the same horrendous symptoms, all caused by chemicals the US chose to expose them to. 7,424 of 7,845 claims of GW veterans were denied between 1994 and 1996 - and it's still hard for them to get a diagnosis.
Wo8 TIL There has been one person who has been completely cured of HIV/AIDS
pxGZ TIL that the most stolen food item in the world is cheese, with 4% of all cheese being sold end up stolen.