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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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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.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.