The first alarm clock could only ring at 4 a.m.
120
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
Castor oil is used as a lubricant in jet planes.
-5
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
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
If a car is travelling at 55 miles per hour it will travel 56 feet before the driver can shift his foot from the accelerator to the brake.
25
Jumbo jets use 4,000 gallons of fuel to take off.
19
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33