Iron weighs more after it rusts.
68
Your brain is 80% water.
525
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
One barrel of petroleum holds 42 gallons.
20
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The force of a suction cup is calculated using F=AP.
15
No matter how cold it gets, gasoline will not freeze.
107
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101