Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Aluminum used to be more valuable than gold!
84
Sound travels about 4 times faster in water than in air.
408
One third of the electricity produced on earth is used to power electric light bulbs!
75
Hot water can freeze faster than cold water.
181
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The only letter not appearing on the Periodic Table is the letter "J".
180