Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Each day, up to 150 species of life become extinct.
-23
The bark of an older redwood tree is fireproof.
65
Hot water can freeze faster than cold water.
181
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
The average temperature at 40,000 feet above sea level is -60 F.
56
Neanderthal man had a brain capacity 100cc larger than modern man's.
50