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TIL fish can recognize themselves in mirror reflections and photos

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R7Xoa TIL clothes hangers weren’t invented until the early 1900s. Before that people had fewer clothes and used shelves and hooks.
5VObB TIL that British troops developed a diss song against Nazi leaders during World War II titled "Hitler Has Only Got One Ball." It was quickly picked up and sang by Allied troops.
meOo TIL “the last great tank battle of the 20th century” took place in the middle of nowhere in the Iraqi desert. Since there were no nearby towns or landmarks, the Battle of 73 Easting had to be named after its map coordinates.
a8wV9 TIL of "Antiaris toxicaria", also known as the "Upas", a tree whose latex is so toxic it is used to poison the tips of blowdarts and arrows in Southeast Asian cultures. It has sometimes been regarded as the most poisonous tree in the world.
low9K TIL that Ancient Greek & Roman statues weren’t originally white but were once painted in vivid, bright colours