Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
One third of the electricity produced on earth is used to power electric light bulbs!
75
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A ball of glass will bounce higher than a ball made of rubber.
73
Sound travels about 4 times faster in water than in air.
408