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TIL Ancient Greeks built a 7 mile wall from Athens to the port of Piraeus to guarantee safe passage to the sea

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gMJA8 TIL, that King George VI, Elizabeth II's father, was the first British Monarch to visit the U.S since the American Revolution
x6Jx5 TIL Jupiter has 95 recognized moons. The largest, Ganymede, is larger than Mercury.
698Yl TIL a young woman's head swelled from her usual measurement of 22 inches to 24.8 inches (and the shape of her face changed) after she used hair dye. This was because the hair dye had a chemical in it called PPD (paraphenylenediamine), which can cause serious allergic reactions in certain people.
J1NKj TIL there is a group called The Unicode Consortium. It's most well known for approving emoji designs. Its primary purpose is to maintain and publish the Unicode Standard which keeps code and text standardized across platforms.
pxVN TIL Turbo button on old PC’s actually slowed the CPU down so that older programs which used CPU for timing could run correctly.