Iron weighs more after it rusts.
16
A cubic yard of air weighs about 2 pounds at sea level.
31
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
