A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.
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The average adult has about 21 square feet of skin.
Locations of coral reefs.
The calcaneus spur found on the male's hind limb is used to deliver venom.
Locations of Sunspots Throughout the Sunspot Cycle
A view from underneath a Chevrolet pickup truck showing how the pad extensions are used to attach ...
Locations of major metabolic pathways within a eukaryotic cell
The Globe Fishery packs shrimp that weigh more than 1.91 ounces each in packages marked large ...