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Did you know?

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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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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The longest a person has survived after a heart transplant is 24 years.

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There are approximately 3 million unintended pregnancies in the United States each year.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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One of the cultural privileges of being white in the United States is less suspicion of wrongdoing. One of the cultural privileges of being white in the United States is less suspicion of wrongdoing.
Incidence of acute hepatitis B in the United States, 1980–2008. Incidence of acute hepatitis B in the United States, 1980–2008.
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Kudzu native to Asia is overgrowing trees across the southeastern United States. Kudzu native to Asia is overgrowing trees across the southeastern United States.
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