Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
One third of the electricity produced on earth is used to power electric light bulbs!
75
In zero gravity, a candle's flame is round and blue.
16
No matter how cold it gets, gasoline will not freeze.
107
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20