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There are 20 feet of blood vessels in each square inch of human skin.
Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
Your heart beats over 36 million times a year.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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