Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Your brain is 80% water.
525
Hot water can freeze faster than cold water.
181
One cubic foot of gold weighs more than 1,200 pounds!
78