The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The average sperm cell swims at 8 inches per hour.
4
Your thumb is about the same size as your nose.
124
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The average person will go on a date at least 100 times before they finally marry.
33
The human sigh acts as a physiological reset button.
23