Balsa wood is classified as a hard wood!
41
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The storage capacity of human brain exceeds 4 Terrabytes.
140
A cesium atom in an atomic clock beats over nine billion times a second.
43
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101