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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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