It's impossible to kill yourself by holding your breath.
22
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
By raising your legs slowly and laying on your back, you can't sink in quicksand.
105
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
Hong Kong has more Rolls Royces per person than anywhere else in the world.
32
The cruise liner, 'Queen Elizabeth 2', moves only six inches for each gallon of diesel that it burns.
26
If you get water flowing fast enough, it can cut metal.
354
The first toilet being flushed in a motion picture was in the movie Psycho.
67