The human body produces and destroys 15 million blood cells every second.
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The longest a person has survived after a heart transplant is 24 years.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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There are 20 feet of blood vessels in each square inch of human skin.
Western Gray Squirrel
J. M. W. Turner, Rain, Steam, and Speed—The Great Western Railway.
Except for interaction within families, age groups in Western culture are usually kept fairly ...