Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The average temperature at 40,000 feet above sea level is -60 F.
56
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Sound travels fifteen times faster through steel than through air.
134
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
If the chemical sodium is dropped into water it will immediately and violently explode.
67