Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Your thumb is about the same size as your nose.
124
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
One human hair can support 3 ounces.
191
If your DNA was stretched out it would reach to the moon 6,000 times.
256