Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Out of all the senses, smell is most closely linked to memory.
146
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Balsa wood is classified as a hard wood!
41