When glass breaks, the cracks move faster than 3,000 miles per hour.
47
Since 1982, a radio frequency emanating from Russia has been broadcasting a buzzer-like sound and, periodically, an unknown voice reads orders, names, and numbers. No one knows where exactly it is coming from or what it means.
13
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
A sneeze travels out your mouth at over 100 m.p.h.!
29
Each 5 m.p.h. you drive over 60 m.p.h. is like paying an additional $.10 a gallon for gas!
33
Passengers on the Beijing subway can pay with plastic bottles.
29
The small pocket in the larger pocket of your jeans was designed for pocket watches.
11