Did you know that a giraffe can lick its own ears? And that astronauts pee in vacuum cleaners? That oranges are a cross between pomelo and mandarin and were originally green? That ketchup used to be medicine and sea cucumbers are not related to cucumbers? And that there are fish that live in trees? Or that there was a living model for Barbie and that blue blood actually exists? 321 entertaining and surprising facts from all areas of life, humorously illustrated and succinctly presented, offering new insights not just for children. An eye-opening experience for anyone who enjoys boasting unusual knowledge.