Obsessive nose picking is called Rhinotillexomania.
101
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The average person's skin weighs twice as much as their brain.
131
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The human body contains over a billion miles of DNA.
147
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
