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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.