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TIL In 1966, the first chess game between computer programs was played. The game took nine months and was played over telegraph.

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4nkR TIL it rarely ever snows in Antarctica. The snow there has been accumulated over many years and the temperature never rises enough to melt it.
KYQK6 TIL that on April 5, 1933, Roosevelt ordered all gold coins and gold certificates in denominations of more than $100 turned in for other money. It required all persons to deliver all gold coin, gold bullion and gold certificates owned by them to the Federal Reserve by May 1 for the set price of $20.
wo5W8 TIL: That The U.S. Department of Energy has set the maximum shelf life for gasoline at six months when stored properly. With that said, most experts agree that as long as fuel is kept fresh and free of contaminants, it can last up to three years.
0OmR TIL helium molecules are so small that they bleed through the rubber in balloons, causing them to deflate and become floppy, unfloaty & sad.
GNW4 TIL Dennis Rader, the “BTK” killer, contacted police and asked “Can I communicate with Floppy and not be traced to computer? Be honest.” Police told him he could, and Rader sent them a disk. Forensic analysts then identified him through metadata from a deleted MS Word file the disk contained.