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TIL a distant relative of modern dragonflies had a wingspan of about 30 inches

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b98kN TIL that there are only 8 core human drives through a combination of emotions that appeal at various levels that make people like or dislike the products they use. In fact, it's modeled by a gamification concept called Octalysis framework
P1d0O TIL of the 1983 Video Game Collapse when industry revenues dropped 97% over two years.
VA1Q TIL that during the 19th century, spiral staircases were installed in firehouse’s to keep the horses from climbing up into the living quarters. These staircases slowed down response time, which led to a new invention: the fireman’s pole.
NaZJ TIL Elvis wore a cross, a star of David and the Hebrew letter chai. He said: “I don’t want to miss out on heaven due to a technicality”
pYAQ4 TIL that the Astrodome, the world's first multi-purpose domed sports stadium, had a gaudy apartment installed by its builder and owner, Houston Judge Roy Hofheinz