Iron weighs more after it rusts.
16
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
For every gallon of sea water, you get more than a quarter pound of salt.
45
Iron weighs more after it rusts.
68
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18
A single speck of dust is half way in size between a subatomic particle and the Earth.
15