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
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
The average person will go on a date at least 100 times before they finally marry.
33
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain doesn't stop developing until about 25 years old.
102
The human brain uses approximately as much energy as a 10 watt light bulb.
120