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There are 20 feet of blood vessels in each square inch of human skin.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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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.
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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.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.