Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Cold water weighs more than hot water.
93
For every gallon of sea water, you get more than a quarter pound of salt.
45
Sound at the right vibration can bore holes through a solid object.
134
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The smell of freshly cut grass is actually a plant distress call.
31