Jumbo jets use 4,000 gallons of fuel to take off.
19
More than a billion transistors are manufactured every second.
-25
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Car airbags kill 1 person for every 22 lives that they save.
80
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