Only humans shed emotional tears.
331
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Human hair and fingernails continue to grow after death.
7
Your thumb is about the same size as your nose.
124
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Mushrooms are more closely related to humans than they are to plants.
47