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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.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The human body produces and destroys 15 million blood cells every second.
Thyroid conditions may make getting pregnant impossible.
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