Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Most dust particles in your house come from dead skin.
48
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The storage capacity of human brain exceeds 4 Terrabytes.
140
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A ball of glass will bounce higher than a ball made of rubber.
73