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TIL about medical maggot teabag therapy - Maggot bags are used to clean away dead tissue while ignoring living flesh, while secreting antimicrobial molecules that disinfect the wound. They are proving useful against the rise of bacteria that's resistant to several widely used antibiotics.

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N7W96 TIL of Aeroplankton, the atmospheric analogue to oceanic plankton that deposit many millions of airborne viruses and bacteria every day on every square meter around the planet.
rZWx TIL Vin Diesel spent $3,000 to write, produce and star in a short film called Multi Facial which paralleled his real life struggles of landing roles due to his multi ethnic appearance. Spielberg saw the film and casted him in Saving Private Ryan, thus launching his career
nWK5o TIL about skeuomorphism, when modern objects, real or digital, retain features of previous designs even when they aren't functional. Examples include the very tiny handle on maple syrup bottles, faux buckles on shoes, the floppy disk 'save' icon, or the sound of a shutter on a cell phone camera.
6EAvl TIL that the country of Paraguay runs on 100% hydroelectric power and only consumes 10% of the electricity it generates, exporting the rest. Almost all of this power comes from the Itaípu dam, which also provides over 25% of Brazil's electricity.
BjLK TIL that, due to a wartime shortage of copper, the Manhattan Project borrowed almost 15,000 tons of silver from the US Treasury to make wiring for the electromagnets in isotope-separating mass spectrometers. The wire, worth over a billion dollars at the time, was removed and returned after the war.