If your DNA was stretched out it would reach to the moon 6,000 times.
256
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
Only humans shed emotional tears.
331
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The world's shortest man measures only 21.5 inches.
73
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
On average a woman has 4 sexual partners in her lifetime.
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