Sony researchers have developed a refrigerator that only opens when you smile.
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The electric chair was invented by a dentist!
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More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
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Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
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About 39,000 gallons of water are used to produce the average car!
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Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
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