A cubic yard of air weighs about 2 pounds at sea level.
31
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
For every gallon of sea water, you get more than a quarter pound of salt.
45
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The average home creates more pollution than does the average car.
33