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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.