The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Sound travels fifteen times faster through steel than through air.
134
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Your brain is 80% water.
525
Scientists in Germany have developed a candy that doesn't cause cavities.
11
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A cesium atom in an atomic clock beats over nine billion times a second.
43
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11