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Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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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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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.