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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.