Jumbo jets use 4,000 gallons of fuel to take off.
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There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The electric chair was invented by a dentist!
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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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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).
1
Sony researchers have developed a refrigerator that only opens when you smile.
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Future biotechnology could be used to trick a prisoner's mind into thinking they have served a 1,000 year sentence in only eight hours, a group of scientists have claimed.
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