You see your nose at all times, your brain just chooses to ignore it.
30
There's 100 trillion good bacteria living in your body.
17
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
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
