Pumice is the only rock that floats on water.
14
The average home creates more pollution than does the average car.
33
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Most dust particles in your house come from dead skin.
48
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
One ragweed plant can release as many as one billion grains of pollen!
51
Sound at the right vibration can bore holes through a solid object.
134