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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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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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There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.