Sound travels fifteen times faster through steel than through air.
134
Pure water (H2O) does not conduct electricity on its own.
46
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The average home creates more pollution than does the average car.
33
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The sun is 330,330 times larger than the earth.
75
Cold water weighs more than hot water.
93