"TIL that when deaf people experience stroke-related brain damage, they often lose the ability to sign in remarkably similar ways to the different forms of linguistic aphasia (difficulty speaking, forming words, sentences being nonsensical)"

"TIL Alexander Fleming's mold that produced the first antibiotic, penicillin, was kept frozen since 1945 and its genomes are used for regrowing nowadays"

"TIL that a Wall Street restaurant, The Exchange Buffet, operated on the honour system, where customers would tally their own bills. It ran successfully from 1885 to 1963"

"TIL the energy released by turning just one kilogram of hydrogen into helium is the same as burning 20,000 metric tons of coal. The sun is doing this constantly through nuclear fusion"

"TIL The national anthem of Italy mentiones Poland and the national anthem of Poland mentions Italy, both in a positive way"

"TIL about Kriegspiel, a chess variant where each player can see their own pieces, but not those of their opponent. Players attempt to move on their turns, and the umpire declares their attempts 'legal' or 'illegal'. If the move is illegal, the player tries again; if it is legal, that move stands"

"TIL Weird Al's biggest problem with services that illegally distributed his music was that they would misattribute songs to him. Al was especially annoyed by profane songs like, "Baby Got Jack” or “Ugly Girl”"