The human brain has the capacity to store everything that you experience.
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The average person's skin weighs twice as much as their brain.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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By weight, Bone is five times stronger than steel.
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An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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A person can live without food for about a month, but only about a week without water.
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Early American humans hunted car-size armadillos and used their shells for houses.
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The human body contains over a billion miles of DNA.
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