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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
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?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.