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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.