The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
No matter how cold it gets, gasoline will not freeze.
107
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Your brain is 80% water.
525
Iron weighs more after it rusts.
68