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
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
More than a billion transistors are manufactured every second.
-25
A toaster uses almost half as much energy as a full-sized oven.
33
Jumbo jets use 4,000 gallons of fuel to take off.
19
Any modern jet is capable of breaking the sound barrier.
34
Whale oil was used in automobile transmissions as late as 1973.
56