On average, there's 100 billion neurons in the human brain.
83
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A human being loses an average of 40 to 100 strands of hair a day.
133
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The average person's skin weighs twice as much as their brain.
131
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human brain has the capacity to store everything that you experience.
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