The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
One cubic foot of gold weighs more than 1,200 pounds!
78
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Nylon is made from coal and petroleum.
42
One ragweed plant can release as many as one billion grains of pollen!
51
The average home creates more pollution than does the average car.
33
The storage capacity of human brain exceeds 4 Terrabytes.
140