Human Body
Fascinating facts about our own biology, from quirky reflexes to surprising capabilities.
Did You Know?
Your fingerprints are unique even among identical twins.
While identical twins share DNA, their fingerprints are different due to environmental factors in the womb affecting ridge...
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Human bones are ounce for ounce stronger than steel.
A bone the size of a matchbox can support 18,000 pounds of pressure, roughly four times what concrete...
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The surface area of the human lung is equal to a tennis court.
If all the tiny air sacs (alveoli) in your lungs were flattened out, they would cover an area...
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The human jawbone is the strongest bone in the body relative to its size and shape.
The mandible can exert forces up to 200 pounds on the back molars. This strength is necessary for...
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Your sense of smell can remember over 50,000 different scents.
The human nose contains about 400 types of scent receptors that can detect thousands of distinct odors. These...
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Your body contains about 0.2 milligrams of gold.
Trace amounts of gold are present in the human body, primarily in blood, bone, and tissue. While this...
Did You Know?
The surface area of your lungs is roughly the size of a tennis court.
If the millions of tiny air sacs (alveoli) in your lungs were flattened out, they would cover an...
Did You Know?
The cornea is the only part of the body with no blood supply.
The cornea must remain transparent to allow light to enter the eye, so it has evolved to obtain...
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Your body creates 4 new stomach linings every year.
The stomach lining, or mucosa, is constantly exposed to harsh acidic conditions and must frequently regenerate. It produces...