A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The first alarm clock could only ring at 4 a.m.
120
There are only 14 blimps in the world.
69
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
Mico headphones read your brainwaves and select music based on your state of mind.
7
In the early 1960's, Porsche commercially manufactured farm tractors.
24


