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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An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
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Energy is being wasted if a toaster is left plugged in after use.
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A small airplane can fly backwards.
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About 39,000 gallons of water are used to produce the average car!
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The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
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