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Did you know?
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
The average adult has about 21 square feet of skin.