Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
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
4.5 pounds of sunlight strike the Earth each day.
27