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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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Everyone has one nostril that is larger than the other.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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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.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.