The human nose can distinguish over one trillion different scents.
Fact #3508
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The brain begins to suffer damage after about 5 minutes without oxygen.
Fact #3069 · Human Body
Your stomach lining replaces itself every few days.
Fact #2645 · Human Body
Your brain generates signals.
Fact #2411 · Human Body
More than half of all humans ever lived died before age 10.
Fact #3089 · Human Body
Horses cannot breathe through their mouths — they are obligate nasal breathers.
Fact #3245 · Human Body
The human body glows faintly in complete darkness.
Fact #1686 · Human Body
The cornea of the eye has no blood vessels — it gets oxygen directly from the air.
Fact #3497 · Human Body
The heart pumps blood through approximately 60,000 miles of blood vessels.
Fact #165 · Human Body
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