There are more than 650 sweat glands in one square inch of skin.
The strongest bone in your body is the femur (thighbone), and it’s hollow.
The most common form of cancer is skin cancer.
The left lung is smaller than the right lung to make room for the heart.
The surface area of a human lung is equal to the size of a tennis court.
The human head contains 22 bones, 14 of which form the face.
The feet account for one quarter of all the human body’s bones.
Blondes have more hair than dark-haired people.
Almost half of all fatal automobile crashes involve alcohol.