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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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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Types of paralysis: (A) Quadriplegia is complete or partial paralysis of the upper extremities and c Types of paralysis: (A) Quadriplegia is complete or partial paralysis of the upper extremities and c
Sunlight on Mars is dimmer than on Earth. This photo of a Martian sunset was imaged by Mars Pathfind Sunlight on Mars is dimmer than on Earth. This photo of a Martian sunset was imaged by Mars Pathfind
Brachial Plexus drawing plus the difference in the forearm Brachial Plexus drawing plus the difference in the forearm
Improving your flexibility can help you reduce muscle soreness and lower your risk of injury Improving your flexibility can help you reduce muscle soreness and lower your risk of injury
Brachial Plexus Brachial Plexus
Anterior & Posterior View of Lower Limb (Extremity) Anterior & Posterior View of Lower Limb (Extremity)
Video: Photosynthesis and Van Helmont Experiment

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