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
Your body is creating and killing about 2.4 million red blood cells per second.
17
The human brain doesn't stop developing until about 25 years old.
102
You see your nose at all times, your brain just chooses to ignore it.
30
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
A person can live without food for about a month, but only about a week without water.
156
If your DNA was stretched out it would reach to the moon 6,000 times.
256
In one day, adult lungs move about 10,000 litres of air.
11