Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Your heart will pump about 212 million liters in its lifetime.
26
On average, there's 100 billion neurons in the human brain.
83
The average person's skin weighs twice as much as their brain.
131
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
If your DNA was stretched out it would reach to the moon 6,000 times.
256
All 13 minerals necessary for human life can be found in alcohol beverages.
282
The largest cell in the human body is the female egg and the smallest is the male sperm.
682