Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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The human brain has the capacity to store everything that you experience.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
If the human eye was a digital camera, it would have 576 megapixels.
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