The first alarm clock could only ring at 4 a.m.
120
Originally, Nintendo was a playing card manufacturer.
70
Car airbags kill 1 person for every 22 lives that they save.
80
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
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
Kleenex tissues were originally used as filters in gas masks.
46