One cubic foot of gold weighs more than 1,200 pounds!
78
4.5 pounds of sunlight strike the Earth each day.
28
Each day, up to 150 species of life become extinct.
-22
One 75-watt bulb gives more light than three 25-watt bulbs.
57
German chemists made a replica of a trophy the size of one molecule.
68
According to studies, men change their minds two to three times more often than women.
72