Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
A human being loses an average of 40 to 100 strands of hair a day.
133
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112