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Did you know?
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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The horizontal fraction bar was introduced by the Arabs.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.