Iron weighs more after it rusts.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
According to studies, men change their minds two to three times more often than women.
72
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Balsa wood is classified as a hard wood!
41
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39