Sound travels fifteen times faster through steel than through air.
134
Research indicates that plants grow healthier when they are stroked.
173
A cubic yard of air weighs about 2 pounds at sea level.
31
No matter how cold it gets, gasoline will not freeze.
107
The average home creates more pollution than does the average car.
33
Iron weighs more after it rusts.
16
4.5 pounds of sunlight strike the Earth each day.
27