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Did you know?
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
The human body produces and destroys 15 million blood cells every second.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).