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Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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More than 4.4billion prescriptions were dispensed within the United States in 2016.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Vital signs for clients in metabolic alkalosis may reveal hypotension, bradycardia, and an irregular Vital signs for clients in metabolic alkalosis may reveal hypotension, bradycardia, and an irregular
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If their caregivers sign to them, deaf children will imitate these signs and “babble” in sign, ... If their caregivers sign to them, deaf children will imitate these signs and “babble” in sign, ...
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