We share 70% of our DNA with a slug.
218
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Your thumb is about the same size as your nose.
124
Only humans shed emotional tears.
331
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191