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Approximately 500,000 babies are born each year in the United States to teenage mothers.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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