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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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 ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.