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
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The tongue is the strongest muscle in the human body.
50
The human sigh acts as a physiological reset button.
23
Our brains have a negativity bias and will remember bad memories more than good ones.
15
People that suffer from gum disease are twice as likely to have a stroke or heart attack.
22
Wearing tight pants can lead to impotence in men.
120