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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.