There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
Living in Space
Movement and Space
Human Memorabilia in Space
What are examples of ideal forms?
Traction the neck by placing the head, in neutral position facing upward, in one hand. Place the ...
Suppose that we have a sample space with five equally likely experimental outcomes: E1, E2, E3, ...