Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
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 only letter not appearing on the Periodic Table is the letter "J".
180
One barrel of petroleum holds 42 gallons.
20
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Each day, up to 150 species of life become extinct.
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