Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The force of a suction cup is calculated using F=AP.
15
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
One third of the electricity produced on earth is used to power electric light bulbs!
75
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
A cubic yard of air weighs about 2 pounds at sea level.
31
In zero gravity, a candle's flame is round and blue.
16