Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The force of a suction cup is calculated using F=AP.
15
The smell of freshly cut grass is actually a plant distress call.
31
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89