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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Illicit drug use costs the United States approximately $181 billion every year.
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There are 20 feet of blood vessels in each square inch of human skin.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.