Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Sound at the right vibration can bore holes through a solid object.
134
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
German chemists made a replica of a trophy the size of one molecule.
68
Nylon is made from coal and petroleum.
42
The average home creates more pollution than does the average car.
33
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21