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Did you know?
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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

