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The human body produces and destroys 15 million blood cells every second.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.