Most dust particles in your house come from dead skin.
48
The smell of freshly cut grass is actually a plant distress call.
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
Iron weighs more after it rusts.
68
For every gallon of sea water, you get more than a quarter pound of salt.
45
Hot water can freeze faster than cold water.
181
A cubic yard of air weighs about 2 pounds at sea level.
31
German chemists made a replica of a trophy the size of one molecule.
68