Iron weighs more after it rusts.
16
Sound at the right vibration can bore holes through a solid object.
134
Most dust particles in your house come from dead skin.
48
Scientists aren't sure what color dinosaurs were.
312
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Nylon is made from coal and petroleum.
42
A cubic yard of air weighs about 2 pounds at sea level.
31
Research indicates that plants grow healthier when they are stroked.
173