One cubic foot of gold weighs more than 1,200 pounds!
78
A cesium atom in an atomic clock beats over nine billion times a second.
43
Iron weighs more after it rusts.
68
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
One third of the electricity produced on earth is used to power electric light bulbs!
75