One human hair can support 3 ounces.
191
Enamel is hardest substance in the human body.
61
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
On average, there's 100 billion neurons in the human brain.
83
Your heart will pump about 212 million liters in its lifetime.
26
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
The human brain uses approximately as much energy as a 10 watt light bulb.
120