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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.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.