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Did you know?
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
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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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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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The familiar sounds of your heart are made by the heart's valves as they open and close.