4.5 pounds of sunlight strike the Earth each day.
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A cubic yard of air weighs about 2 pounds at sea level.
31
One cubic foot of gold weighs more than 1,200 pounds!
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Aluminum used to be more valuable than gold!
84
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
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.
24
Iron weighs more after it rusts.
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