Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Sound travels fifteen times faster through steel than through air.
134
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
For every gallon of sea water, you get more than a quarter pound of salt.
45
Liquid TIDE laundry detergent glows under a blacklight.
96
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
A 'jiffy' is an actual unit of time for 1/100th of a second!
66