Sound travels fifteen times faster through steel than through air.
134
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Indoor pollution is 10 times more toxic than outdoor pollution.
62
For every gallon of sea water, you get more than a quarter pound of salt.
45
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The storage capacity of human brain exceeds 4 Terrabytes.
140
Balsa wood is classified as a hard wood!
41
The bark of an older redwood tree is fireproof.
65