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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.