Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Sound travels fifteen times faster through steel than through air.
134
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Diamonds can be shattered with a hammer.
-104
One ragweed plant can release as many as one billion grains of pollen!
51