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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Asthma cases in Americans are about 75% higher today than they were in 1980.