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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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Medication errors are three times higher among children and infants than with adults.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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If you could remove all of your skin, it would weigh up to 5 pounds.