Kleenex tissues were originally used as filters in gas masks.
46
The cigarette lighter was invented before the match.
210
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
About 39,000 gallons of water are used to produce the average car!
14
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
Jumbo jets use 4,000 gallons of fuel to take off.
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