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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.