Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The smell of freshly cut grass is actually a plant distress call.
31
The average temperature at 40,000 feet above sea level is -60 F.
56
The only letter not appearing on the Periodic Table is the letter "J".
180