The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The average temperature at 40,000 feet above sea level is -60 F.
56
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The only letter not appearing on the Periodic Table is the letter "J".
180
Iron weighs more after it rusts.
68