The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
One cubic foot of gold weighs more than 1,200 pounds!
78
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
German chemists made a replica of a trophy the size of one molecule.
68
A cubic yard of air weighs about 2 pounds at sea level.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
According to studies, men change their minds two to three times more often than women.
72
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
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