Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
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The cigarette lighter was invented before the match.
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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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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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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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Jumbo jets use 4,000 gallons of fuel to take off.
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