Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Hot water can freeze faster than cold water.
181
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
Your brain is 80% water.
525
The only letter not appearing on the Periodic Table is the letter "J".
180