To have your picture taken by the very first camera you would have had to sit still for 8 hours!
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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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If a car is travelling at 55 miles per hour it will travel 56 feet before the driver can shift his foot from the accelerator to the brake.
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Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
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The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
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Kleenex tissues were originally used as filters in gas masks.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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