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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Illicit drug use costs the United States approximately $181 billion every year.
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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.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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There are 20 feet of blood vessels in each square inch of human skin.