A toaster uses almost half as much energy as a full-sized oven.
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The first alarm clock could only ring at 4 a.m.
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The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
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Kleenex tissues were originally used as filters in gas masks.
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First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
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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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Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
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