When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
The Band-Aid was originally made for the inventor's wife, who often cut and burned herself while cooking.
6
If you get water flowing fast enough, it can cut metal.
354
Oak trees can live 200 or more years.
61
The oldest living person smoked cigarettes from the age of 21 to 117.
13
The best time for a person to buy shoes is in the afternoon. This is because the foot tends to swell a bit around this time.
49
There are more telephones than people in Washington, D.C.
121
If you chew gum when you study a subject and then chew the same flavor when you take the test, it will help you remember!
34