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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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The human body produces and destroys 15 million blood cells every second.

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

The reproductive fungal body The reproductive fungal body
Multiple crossovers can include more than two chromatids Multiple crossovers can include more than two chromatids
The thyroid and parathyroid glands. The thyroid and parathyroid glands.
The mammary glands. The mammary glands.
Anterior view of muscles of the human body Anterior view of muscles of the human body
Main body cavities that hold human organs Main body cavities that hold human organs
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