Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
If the chemical sodium is dropped into water it will immediately and violently explode.
67
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The average temperature at 40,000 feet above sea level is -60 F.
56
Diamonds can be shattered with a hammer.
-104