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
A human being loses an average of 40 to 100 strands of hair a day.
133
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Your thumb is about the same size as your nose.
124
The human brain has the capacity to store everything that you experience.
4k
The world's shortest man measures only 21.5 inches.
73
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
160