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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.