The Hoover Dam holds enough concrete to pave a two-lane highway from San Francisco to New York.
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QWERTY keyboard layout was designed in 1873 partly to separate commonly used letter pairs and reduce mechanical jamming.
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The printing press allowed books to be reproduced more efficiently.
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The modern emoji originated in Japan in 1999, designed by Shigetaka Kurita for a mobile internet platform.
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The sewing machine sped up clothing production.
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The average Google search uses about 0.3 watt-hours of electricity.
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