Balsa wood is classified as a hard wood!
41
Sound travels fifteen times faster through steel than through air.
134
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
One cubic foot of gold weighs more than 1,200 pounds!
78
The storage capacity of human brain exceeds 4 Terrabytes.
140