The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Aluminum used to be more valuable than gold!
84
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
German chemists made a replica of a trophy the size of one molecule.
68
Most dust particles in your house come from dead skin.
48