Sound travels fifteen times faster through steel than through air.
134
Aluminum used to be more valuable than gold!
84
One cubic foot of gold weighs more than 1,200 pounds!
78
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Nearly 50% of the world's scientists are assigned to military projects.
71
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21