Balsa wood is classified as a hard wood!
41
Scientists aren't sure what color dinosaurs were.
312
Diamonds can be shattered with a hammer.
-104
One third of the electricity produced on earth is used to power electric light bulbs!
75
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51