The average home creates more pollution than does the average car.
33
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Iron weighs more after it rusts.
68
German chemists made a replica of a trophy the size of one molecule.
68
Out of all the senses, smell is most closely linked to memory.
146