Sound travels about 4 times faster in water than in air.
408
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Billions of neutrinos pass unnoticed through your body every second.
6
Pumice is the only rock that floats on water.
14
The only letter not appearing on the Periodic Table is the letter "J".
180
The earth is approx. 6,588,000,000,000,000,000 tons.
175