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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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There are 20 feet of blood vessels in each square inch of human skin.

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