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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.