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Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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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.