The bark of an older redwood tree is fireproof.
65
According to studies, men change their minds two to three times more often than women.
72
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Iron weighs more after it rusts.
16
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Iron weighs more after it rusts.
68
For every gallon of sea water, you get more than a quarter pound of salt.
45
Hot water can freeze faster than cold water.
181