When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
According to studies, men change their minds two to three times more often than women.
72
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
Cold water weighs more than hot water.
93
Aluminum used to be more valuable than gold!
84
For every gallon of sea water, you get more than a quarter pound of salt.
45
The only letter not appearing on the Periodic Table is the letter "J".
180
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65