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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Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
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In the early 1960's, Porsche commercially manufactured farm tractors.
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A small airplane can fly backwards.
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The ball on top of a flagpole is called a 'truck'.
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Originally, Nintendo was a playing card manufacturer.
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