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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The average car produces a pound of pollution every 25 miles!
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A toaster uses almost half as much energy as a full-sized oven.
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There's a Mumbai-based pizzeria that now delivers pizza by drone.
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The first alarm clock could only ring at 4 a.m.
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