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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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The familiar sounds of your heart are made by the heart's valves as they open and close.