If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The human body contains over a billion miles of DNA.
147
In one day, adult lungs move about 10,000 litres of air.
11
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Your thumb is about the same size as your nose.
124
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89