Sound travels fifteen times faster through steel than through air.
134
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Scientists in Germany have developed a candy that doesn't cause cavities.
11
A cubic yard of air weighs about 2 pounds at sea level.
31
Iron weighs more after it rusts.
16
The average temperature at 40,000 feet above sea level is -60 F.
56
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5