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Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
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.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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In 1864, the first barbiturate (barbituric acid) was synthesized.