Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Iron weighs more after it rusts.
68
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Research indicates that plants grow healthier when they are stroked.
173
A ball of glass will bounce higher than a ball made of rubber.
73
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199