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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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There are more sensory neurons in the tongue than in any other part of the body.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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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.