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The average adult has about 21 square feet of skin.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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Your heart beats over 36 million times a year.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.