Did you know?
Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
(a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu
Why Cells Are Small
Development of the Eyes and Ears: External View - 28 days Embryo
A very small sampling of organisms in an arctic food web on land.
Structure of the small intestine.
Structure of the small intestine.