One third of the electricity produced on earth is used to power electric light bulbs!
75
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
In zero gravity, a candle's flame is round and blue.
16
Iron weighs more after it rusts.
16
The average temperature at 40,000 feet above sea level is -60 F.
56
A ball of glass will bounce higher than a ball made of rubber.
73
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Cold water weighs more than hot water.
93