The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Sound at the right vibration can bore holes through a solid object.
134
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65