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Did you know?
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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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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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.