The earth is approx. 6,588,000,000,000,000,000 tons.
175
Sound travels fifteen times faster through steel than through air.
134
The only letter not appearing on the Periodic Table is the letter "J".
180
Most dust particles in your house are made from dead skin!
67
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Sound travels about 4 times faster in water than in air.
408