Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Scientists aren't sure what color dinosaurs were.
312
The force of a suction cup is calculated using F=AP.
15
One cubic foot of gold weighs more than 1,200 pounds!
78
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
A cubic yard of air weighs about 2 pounds at sea level.
31