The earth is approx. 6,588,000,000,000,000,000 tons.
175
Out of all the senses, smell is most closely linked to memory.
146
Most dust particles in your house come from dead skin.
48
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
No matter how cold it gets, gasoline will not freeze.
107
Iron weighs more after it rusts.
68