Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Pain occurs when sounds are above 130 db.
124
Your heart will pump about 212 million liters in its lifetime.
26
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
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
A human being loses an average of 40 to 100 strands of hair a day.
133
The human sigh acts as a physiological reset button.
23