Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Hot water can freeze faster than cold water.
181
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The sun is 330,330 times larger than the earth.
75
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
A cubic yard of air weighs about 2 pounds at sea level.
31