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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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There are more sensory neurons in the tongue than in any other part of the body.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.