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Author Question: In "Since no two-story house is a skyscraper and all skyscrapers are elevator buildings, no ... (Read 144 times) |
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s
In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th