Most dust particles in your house come from dead skin.
48
Nylon is made from coal and petroleum.
42
Sound at the right vibration can bore holes through a solid object.
134
Cold water weighs more than hot water.
93
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5