Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
You see your nose at all times, your brain just chooses to ignore it.
30
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
The human brain doesn't stop developing until about 25 years old.
102
The human sigh acts as a physiological reset button.
23
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