Each day, up to 150 species of life become extinct.
-23
Nylon is made from coal and petroleum.
42
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Aluminum used to be more valuable than gold!
84
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
One 75-watt bulb gives more light than three 25-watt bulbs.
57