Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
A ball of glass will bounce higher than a ball made of rubber.
73
Balsa wood is classified as a hard wood!
41
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
In zero gravity, a candle's flame is round and blue.
16
One barrel of petroleum holds 42 gallons.
20